diff options
Diffstat (limited to 'doc/dispread.html')
| -rw-r--r--[-rwxr-xr-x] | doc/dispread.html | 1304 |
1 files changed, 652 insertions, 652 deletions
diff --git a/doc/dispread.html b/doc/dispread.html index 52a38c2..f7fe551 100755..100644 --- a/doc/dispread.html +++ b/doc/dispread.html @@ -1,25 +1,25 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> -<html> - <head> - <title>dispread</title> - <meta http-equiv="content-type" content="text/html; - charset=windows-1252"> - <meta name="author" content="Graeme Gill"> - </head> - <body> - <h2><b>spectro/dispread</b> </h2> - <h3>Summary</h3> - Display test patches on a monitor, read the colorimetric value - result with the colorimeter, and create the chart readings file. The - type of instrument is determined by the communication port selected. - Emission and display measurement instruments are supported.<br> - <br> - If you want to read a display manually rather than automatically, - see <a href="chartread.html">chartread</a> and the <a - href="chartread.html#d">-d</a> option.<br> - <h3>Usage</h3> - <small style="font-family: monospace;">dispread [-options]<i> - inoutfile</i><br> +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+ <head>
+ <title>dispread</title>
+ <meta http-equiv="content-type" content="text/html;
+ charset=windows-1252">
+ <meta name="author" content="Graeme Gill">
+ </head>
+ <body>
+ <h2><b>spectro/dispread</b> </h2>
+ <h3>Summary</h3>
+ Display test patches on a monitor, read the colorimetric value
+ result with the colorimeter, and create the chart readings file. The
+ type of instrument is determined by the communication port selected.
+ Emission and display measurement instruments are supported.<br>
+ <br>
+ If you want to read a display manually rather than automatically,
+ see <a href="chartread.html">chartread</a> and the <a
+ href="chartread.html#d">-d</a> option.<br>
+ <h3>Usage</h3>
+ <small style="font-family: monospace;">dispread [-options]<i>
+ inoutfile</i><br>
<a href="#v">-v</a> @@ -54,17 +54,17 @@ - - Verbose mode<br> - </small><font size="-1"><a style="font-family: monospace;" - href="#display">-display displayname</a><span - style="font-family: monospace;"> [X11 only] Choose X11 display - name<br> - </span></font><font size="-1"><span style="font-family: - monospace;"> <a href="#dnm">-d n[,m]</a> - - [X11 only]Choose the display from the following list (default - 1),<br> +
+ Verbose mode<br>
+ </small><font size="-1"><a style="font-family: monospace;"
+ href="#display">-display displayname</a><span
+ style="font-family: monospace;"> [X11 only] Choose X11 display
+ name<br>
+ </span></font><font size="-1"><span style="font-family:
+ monospace;"> <a href="#dnm">-d n[,m]</a>
+
+ [X11 only]Choose the display from the following list (default
+ 1),<br>
and optionally @@ -106,9 +106,9 @@ m - - for VideoLUT access.</span></font><br> - <font size="-1"><span style="font-family: monospace;"> <a +
+ for VideoLUT access.</span></font><br>
+ <font size="-1"><span style="font-family: monospace;"> <a
href="#d">-d n</a> Choose the @@ -150,8 +150,8 @@ list - - (default 1)</span></font><small style="font-family: monospace;"><br> +
+ (default 1)</span></font><small style="font-family: monospace;"><br>
</small><span style="font-family: monospace;"> <a href="#dweb">-dweb[:port]</a> @@ -188,9 +188,9 @@ list - - Display via a web server at port (default 8080)</span><br> - <span style="font-family: monospace;"> <a href="#dmadvr">-dmadvr</a> +
+ Display via a web server at port (default 8080)</span><br>
+ <span style="font-family: monospace;"> <a href="#dmadvr">-dmadvr</a>
@@ -214,22 +214,22 @@ list - - [MSWin] Display via MadVR Video Renderer</span><br> +
+ [MSWin] Display via MadVR Video Renderer</span><br>
<tt> </tt><tt><a href="#dcc">-dcc[:n]</a> - - </tt><tt>Display via n'th ChromeCast (default 1, ? for list)</tt><br> - <small style="font-family: monospace;"> <span style="font-family: - monospace;"> </span><a style="font-family: monospace;" - href="#c">-c listno</a><span style="font-family: monospace;"> - Set - communication port from the following list (default 1)<br> - </span></small><font size="-1"><span style="font-family: +
+ </tt><tt>Display via n'th ChromeCast (default 1, ? for list)</tt><br>
+ <small style="font-family: monospace;"> <span style="font-family:
+ monospace;"> </span><a style="font-family: monospace;"
+ href="#c">-c listno</a><span style="font-family: monospace;">
+ Set
+ communication port from the following list (default 1)<br>
+ </span></small><font size="-1"><span style="font-family:
monospace;"> <a href="#p">-p</a> @@ -264,10 +264,10 @@ list - - Use telephoto mode (ie. for a projector) (if available)</span></font><br> - <font size="-1"><span style="font-family: monospace;"><a - href="#y">-y X</a> +
+ Use telephoto mode (ie. for a projector) (if available)</span></font><br>
+ <font size="-1"><span style="font-family: monospace;"><a
+ href="#y">-y X</a>
Display @@ -304,10 +304,10 @@ Display - - type - instrument specific list to choose from.</span></font><br> - <small style="font-family: monospace;"> <span - style="text-decoration: underline;">-</span><a href="#k">k +
+ type - instrument specific list to choose from.</span></font><br>
+ <small style="font-family: monospace;"> <span
+ style="text-decoration: underline;">-</span><a href="#k">k
file.cal</a> @@ -342,10 +342,10 @@ Display - - Load calibration file into display while reading<br> - </small><small style="font-family: monospace;"> <span - style="text-decoration: underline;">-</span><a href="#K">K +
+ Load calibration file into display while reading<br>
+ </small><small style="font-family: monospace;"> <span
+ style="text-decoration: underline;">-</span><a href="#K">K
file.cal</a> Apply @@ -381,8 +381,8 @@ Apply - - calibration file to test values while reading</small><br> +
+ calibration file to test values while reading</small><br>
<tt> <a href="#V">-V</a> @@ -398,8 +398,8 @@ Apply - - [MSWin] Enable MadVR color management (3dLut)</tt><br> +
+ [MSWin] Enable MadVR color management (3dLut)</tt><br>
<small style="font-family: monospace;"> <a href="#s">-s</a> @@ -434,12 +434,12 @@ Apply - - Save spectral information (default don't - save)<br> - </small><font style="font-family: monospace;" size="-1"> <a - href="#P">-P ho,vo,ss[,vs]</a> Position - test window and scale it<br> +
+ Save spectral information (default don't
+ save)<br>
+ </small><font style="font-family: monospace;" size="-1"> <a
+ href="#P">-P ho,vo,ss[,vs]</a> Position
+ test window and scale it<br>
ho,vi: 0.0 @@ -481,8 +481,8 @@ center, - - 1.0 = right/bottom etc.<br> +
+ 1.0 = right/bottom etc.<br>
ss: 0.5 @@ -524,8 +524,8 @@ normal, - - 2.0 = double etc.<br> +
+ 2.0 = double etc.<br>
</font><font size="-1"><span style="font-family: monospace;"> @@ -553,10 +553,10 @@ normal, - - ss,vs: = optional horizontal, vertical scale.</span></font><br> - <font style="font-family: monospace;" size="-1"> </font><font - size="-1"><span style="font-family: monospace;"><a href="#F">-F</a> +
+ ss,vs: = optional horizontal, vertical scale.</span></font><br>
+ <font style="font-family: monospace;" size="-1"> </font><font
+ size="-1"><span style="font-family: monospace;"><a href="#F">-F</a>
@@ -591,10 +591,10 @@ normal, - - Fill whole screen with black background</span></font><br> - <font size="-1"><span style="font-family: monospace;"> </span></font><font - size="-1"><span style="font-family: monospace;"><a href="#E">-E</a> +
+ Fill whole screen with black background</span></font><br>
+ <font size="-1"><span style="font-family: monospace;"> </span></font><font
+ size="-1"><span style="font-family: monospace;"><a href="#E">-E</a>
@@ -614,11 +614,11 @@ normal, - - </span></font><small><span style="font-family: monospace;">Video - encode output as (16-235)/255 "TV" levels</span></small><br> - <font size="-1"><span style="font-family: monospace;"> </span></font><font - size="-1"><span style="font-family: monospace;"><a href="#Z">-Z +
+ </span></font><small><span style="font-family: monospace;">Video
+ encode output as (16-235)/255 "TV" levels</span></small><br>
+ <font size="-1"><span style="font-family: monospace;"> </span></font><font
+ size="-1"><span style="font-family: monospace;"><a href="#Z">-Z
nbits</a> @@ -638,7 +638,7 @@ normal, - +
</span></font><small><span style="font-family: monospace;">Quantize test values @@ -658,9 +658,9 @@ fit - - in nbits</span></small><br style="font-family: monospace;"> - <small style="font-family: monospace;"> <span +
+ in nbits</span></small><br style="font-family: monospace;">
+ <small style="font-family: monospace;"> <span
style="text-decoration: underline;"></span><a href="#n">-n</a> [X11 @@ -702,9 +702,9 @@ redirect - - on test window<br> - </small><small style="font-family: monospace;"> <a href="#J">-J</a> +
+ on test window<br>
+ </small><small style="font-family: monospace;"> <a href="#J">-J</a>
@@ -739,9 +739,9 @@ redirect - - Run calibration first</small><br> - <font size="-1"><span style="font-family: monospace;"> <a +
+ Run calibration first</small><br>
+ <font size="-1"><span style="font-family: monospace;"> <a
href="#N">-N</a> @@ -776,17 +776,17 @@ redirect - - Disable initial calibration of instrument if possible<br> - </span></font><font size="-1"><span style="font-family: - monospace;"> </span><a style="font-family: monospace;" - href="#H">-H</a><span style="font-family: monospace;"> - - Use high resolution spectrum mode (if - available)</span></font><font size="-1"><span - style="font-family: monospace;"></span><span style="font-family: - monospace;"><br> - <a href="#w">-w</a> +
+ Disable initial calibration of instrument if possible<br>
+ </span></font><font size="-1"><span style="font-family:
+ monospace;"> </span><a style="font-family: monospace;"
+ href="#H">-H</a><span style="font-family: monospace;">
+
+ Use high resolution spectrum mode (if
+ available)</span></font><font size="-1"><span
+ style="font-family: monospace;"></span><span style="font-family:
+ monospace;"><br>
+ <a href="#w">-w</a>
Disable normalisation @@ -828,9 +828,9 @@ Y - - 100</span></font><small><span style="font-family: monospace;"></span></small><br> - <font size="-1"><span style="font-family: monospace;"><a +
+ 100</span></font><small><span style="font-family: monospace;"></span></small><br>
+ <font size="-1"><span style="font-family: monospace;"><a
href="#X1">-X file.ccmx</a> @@ -865,9 +865,9 @@ Y - - Apply Colorimeter Correction Matrix</span></font><br> - <span style="font-family: monospace;"> <a href="#X2">-X +
+ Apply Colorimeter Correction Matrix</span></font><br>
+ <span style="font-family: monospace;"> <a href="#X2">-X
file.ccss</a> Use Colorimeter @@ -905,14 +905,14 @@ Calibration - - Spectral Samples for calibration</span><font size="-1"><span - style="font-family: monospace;"><br> - </span></font><small><span style="font-family: monospace;"> </span><a - style="font-family: monospace;" href="#Q">-Q <i>observ</i></a><span - style="font-family: monospace;"> - Choose CIE Observer for spectrometer or CCSS - colorimeter data:</span><br style="font-family: monospace;"> +
+ Spectral Samples for calibration</span><font size="-1"><span
+ style="font-family: monospace;"><br>
+ </span></font><small><span style="font-family: monospace;"> </span><a
+ style="font-family: monospace;" href="#Q">-Q <i>observ</i></a><span
+ style="font-family: monospace;">
+ Choose CIE Observer for spectrometer or CCSS
+ colorimeter data:</span><br style="font-family: monospace;">
<span style="font-family: monospace;"> @@ -947,12 +947,12 @@ Calibration - - 1931_2 </span></small><small><span - style="font-family: monospace;">(def.)</span></small><small><span - style="font-family: monospace;">, 1964_10, S&B 1955_2, shaw, - J&V 1978_2, 1964_10c</span></small><br> - <small><span style="font-family: monospace;"> <a +
+ 1931_2 </span></small><small><span
+ style="font-family: monospace;">(def.)</span></small><small><span
+ style="font-family: monospace;">, 1964_10, S&B 1955_2, shaw,
+ J&V 1978_2, 1964_10c</span></small><br>
+ <small><span style="font-family: monospace;"> <a
href="dispread.html#I">-I b|w</a> Drift compensation, @@ -994,8 +994,8 @@ Both: - - -Ibw</span></small><br> +
+ -Ibw</span></small><br>
<small><span style="font-family: monospace;"><tt> <a href="#YR">-Y @@ -1008,7 +1008,7 @@ Both: - +
R:<i>rate</i></a> @@ -1021,12 +1021,12 @@ Both: - - Override measured refresh rate with rate Hz<br> - </tt> </span></small><font size="-1"><span - style="font-family: monospace;"></span><a style=" font-family: - monospace;" href="#YA">-<font size="-1">Y</font> A</a><span - style="font-family: monospace;"> +
+ Override measured refresh rate with rate Hz<br>
+ </tt> </span></small><font size="-1"><span
+ style="font-family: monospace;"></span><a style=" font-family:
+ monospace;" href="#YA">-<font size="-1">Y</font> A</a><span
+ style="font-family: monospace;">
@@ -1052,31 +1052,31 @@ Both: - - Use non-adaptive integration time mode (if available).</span></font><br> - <font size="-1"><span style="font-family: monospace;"> </span><a - style=" font-family: monospace;" href="#Yp">-<font size="-1">Y</font> - <font size="-1">p</font></a><span style="font-family: - monospace;"> - - Don't wait for the instrument to be placed on - the display</span></font><br> - <font size="-1"><span style="font-family: monospace;"> </span><a - style="font-family: monospace;" href="#C">-C "command"</a><span - style="font-family: monospace;"> - Invoke shell - "command" each time a color is set<br> - </span></font><font size="-1"><span style="font-family: - monospace;"> </span><a style="font-family: monospace;" - href="#M">-M "command"</a><span style="font-family: monospace;"> - Invoke shell - "command" each time a color is measured</span></font><br> - <small> <a style="font-family: monospace;" href="#x">-x x</a><span +
+ Use non-adaptive integration time mode (if available).</span></font><br>
+ <font size="-1"><span style="font-family: monospace;"> </span><a
+ style=" font-family: monospace;" href="#Yp">-<font size="-1">Y</font>
+ <font size="-1">p</font></a><span style="font-family:
+ monospace;">
+
+ Don't wait for the instrument to be placed on
+ the display</span></font><br>
+ <font size="-1"><span style="font-family: monospace;"> </span><a
+ style="font-family: monospace;" href="#C">-C "command"</a><span
+ style="font-family: monospace;">
+ Invoke shell
+ "command" each time a color is set<br>
+ </span></font><font size="-1"><span style="font-family:
+ monospace;"> </span><a style="font-family: monospace;"
+ href="#M">-M "command"</a><span style="font-family: monospace;">
+ Invoke shell
+ "command" each time a color is measured</span></font><br>
+ <small> <a style="font-family: monospace;" href="#x">-x x</a><span
style="font-family: monospace;"> -Take - manually entered - XYZ values</span></small><br> - <font size="-1"><span style="font-family: monospace;"> <a +Take
+ manually entered
+ XYZ values</span></small><br>
+ <font size="-1"><span style="font-family: monospace;"> <a
href="#W">-W n|h|x</a> Override serial @@ -1118,11 +1118,11 @@ n - - none, h = HW, x = Xon/Xoff</span></font><br> - <small style="font-family: monospace;"> <a href="#D">-D [level]</a> - Print debug - diagnostics to stderr</small><br> +
+ none, h = HW, x = Xon/Xoff</span></font><br>
+ <small style="font-family: monospace;"> <a href="#D">-D [level]</a>
+ Print debug
+ diagnostics to stderr</small><br>
<small style="font-family: monospace;"> <a href="#p1"><i>inoutfile</i></a> @@ -1157,73 +1157,73 @@ n - - Base name for input[<a href="File_Formats.html#.ti1">.ti1</a>]/output[<a - href="File_Formats.html#.ti3">.ti3</a>] file.<br> - </small> <br> - <b>Examples</b><br> - <br> - dispread -c1 -i92 mycrt<br> - <h3>Comments<br> - </h3> - This is the tool for exercising a display, in order to measure its - color characteristics. The device test colors are defined by the - outfile.ti1 file, while the resulting device+colorimetric and - optional spectral readings are stored in the outfile.ti3 file. - Display calibration curves can be applied during the measurements, - and the curves included in the resulting .ti3 data file using the <span - style="font-weight: bold;">-k</span>flag. See <a - href="dispcal.html">dispcal</a> for information on how to - calibrate the display before profiling it. For best results, you - should run this against a neutral grey desktop background, and avoid - having any bright images or windows on the screen at the time you - run it.<br> - <br> - <a name="v"></a> The <b>-v</b> flag reports progress information.<br> - <br> - <a name="display"></a><span style="font-weight: bold;">-display</span>: - When running on a UNIX based system that used the X11 Windowing - System, <b>dispread</b> will by default use the $DISPLAY - environment variable to determine which display and screen to read - from. This can be overridden by supplying an X11 display name to the - <span style="font-weight: bold;">-display</span> option. Note that - if Xinerama is active, you can't select the screen using $DISPLAY or - -display, you have to select it using the <span style="font-weight: - bold;">-d</span> parameter.<br> - <br> - <a name="d"></a> <span style="font-weight: bold;">-d</span>: By - default the main display will be the location of the test window. If - the system has more than one display or screen, an alternate - display/screen can be selected with the <span style="font-weight: - bold;">-d</span> parameter. If you invoke <span - style="font-weight: bold;">dispread</span> so as to display the - usage information (i.e. "dispread -?" or "dispread --"), then the - discovered displays/screens will be listed. Multiple displays may - not be listed, if they appear as a single display to the operating - system (ie. the multi-display support is hidden in the video card - driver). On UNIX based system that used the X11 Windowing System, - the <span style="font-weight: bold;">-d</span> parameter will - override the screen specified by the $DISPLAY or <span - style="font-weight: bold;">-display</span> parameter.<br> - <br> - On X11 the inability to access VideoLUTs could be because you are - trying to access a remote display, and the remote display doesn't - support the XF86VidMode extension, or perhaps you are running - multiple monitors using NVidia TwinView, or MergedFB, and trying to - access anything other than the primary monitor. TwinView and - MergedFB don't properly support the XF86VidMode extension for - multiple displays. You can use <a href="dispwin.html#r">dispwin -r</a> - to test whether the VideoLUTs are accessible for a particular - display. See also below, on how to select a different display for - VideoLUT access. Also note that dispcal will fail if the Visual - depth doesn't match the VideoLUT depth. Typically the VideoLUTs have - 256 entries per color component, so the Visual generally needs to be - 24 bits, 8 bits per color component.<br> - <br> - <a name="dnm"></a>Because of the difficulty cause by TwinView and - MergedFB in X11 based systems, you can optionally specify a separate - display number after the display that is going to be used to present - test patches, for accessing the VideoLUT hardware. This must be +
+ Base name for input[<a href="File_Formats.html#.ti1">.ti1</a>]/output[<a
+ href="File_Formats.html#.ti3">.ti3</a>] file.<br>
+ </small> <br>
+ <b>Examples</b><br>
+ <br>
+ dispread -c1 -i92 mycrt<br>
+ <h3>Comments<br>
+ </h3>
+ This is the tool for exercising a display, in order to measure its
+ color characteristics. The device test colors are defined by the
+ outfile.ti1 file, while the resulting device+colorimetric and
+ optional spectral readings are stored in the outfile.ti3 file.
+ Display calibration curves can be applied during the measurements,
+ and the curves included in the resulting .ti3 data file using the <span
+ style="font-weight: bold;">-k</span>flag. See <a
+ href="dispcal.html">dispcal</a> for information on how to
+ calibrate the display before profiling it. For best results, you
+ should run this against a neutral grey desktop background, and avoid
+ having any bright images or windows on the screen at the time you
+ run it.<br>
+ <br>
+ <a name="v"></a> The <b>-v</b> flag reports progress information.<br>
+ <br>
+ <a name="display"></a><span style="font-weight: bold;">-display</span>:
+ When running on a UNIX based system that used the X11 Windowing
+ System, <b>dispread</b> will by default use the $DISPLAY
+ environment variable to determine which display and screen to read
+ from. This can be overridden by supplying an X11 display name to the
+ <span style="font-weight: bold;">-display</span> option. Note that
+ if Xinerama is active, you can't select the screen using $DISPLAY or
+ -display, you have to select it using the <span style="font-weight:
+ bold;">-d</span> parameter.<br>
+ <br>
+ <a name="d"></a> <span style="font-weight: bold;">-d</span>: By
+ default the main display will be the location of the test window. If
+ the system has more than one display or screen, an alternate
+ display/screen can be selected with the <span style="font-weight:
+ bold;">-d</span> parameter. If you invoke <span
+ style="font-weight: bold;">dispread</span> so as to display the
+ usage information (i.e. "dispread -?" or "dispread --"), then the
+ discovered displays/screens will be listed. Multiple displays may
+ not be listed, if they appear as a single display to the operating
+ system (ie. the multi-display support is hidden in the video card
+ driver). On UNIX based system that used the X11 Windowing System,
+ the <span style="font-weight: bold;">-d</span> parameter will
+ override the screen specified by the $DISPLAY or <span
+ style="font-weight: bold;">-display</span> parameter.<br>
+ <br>
+ On X11 the inability to access VideoLUTs could be because you are
+ trying to access a remote display, and the remote display doesn't
+ support the XF86VidMode extension, or perhaps you are running
+ multiple monitors using NVidia TwinView, or MergedFB, and trying to
+ access anything other than the primary monitor. TwinView and
+ MergedFB don't properly support the XF86VidMode extension for
+ multiple displays. You can use <a href="dispwin.html#r">dispwin -r</a>
+ to test whether the VideoLUTs are accessible for a particular
+ display. See also below, on how to select a different display for
+ VideoLUT access. Also note that dispcal will fail if the Visual
+ depth doesn't match the VideoLUT depth. Typically the VideoLUTs have
+ 256 entries per color component, so the Visual generally needs to be
+ 24 bits, 8 bits per color component.<br>
+ <br>
+ <a name="dnm"></a>Because of the difficulty cause by TwinView and
+ MergedFB in X11 based systems, you can optionally specify a separate
+ display number after the display that is going to be used to present
+ test patches, for accessing the VideoLUT hardware. This must be
specified as a single string, e.g. <span style="font-weight: bold;">-d @@ -1258,423 +1258,423 @@ n - - 1,2</span> . Some experimentation may be needed using <a - href="dispwin.html">dispwin</a> on such systems, to discover what - screen has access to the VideoLUT hardware, and which screens the - test patches appear on. You may be able to calibrate one screen, and - then share the calibration with another screen. Profiling can be - done independently to calibration.<br> - <br> - <a name="dweb"></a><span style="font-weight: bold;">-dweb</span> or - <span style="font-weight: bold;">-dweb:port</span> starts a - standalone web server on your machine, which then allows a local or - remote web browser to display the the color test patches. By default - port <span style="font-weight: bold;">8080</span> is used, but this - can be overridden by appending a <span style="font-weight: bold;">:</span> - and the port number i.e. <span style="font-weight: bold;">-dweb:8001</span>. - The URL will be <span style="font-weight: bold;">http://</span> - then name of the machine or its I.P. address followed by a colon and - the port number - e.g something like <span style="font-weight: - bold;">http://192.168.0.1:8080</span>. If you use the verbose - option (<span style="font-weight: bold;">-v</span>) then a likely - URL will be printed once the server is started, or you could run <span - style="font-weight: bold;">ipconfig</span> (MSWin) or <span - style="font-weight: bold;">/sbin/ifconfig</span> (Linux or OS X) - and identify an internet address for your machine that way. <b> - JavaScript</b> needs to be enabled in your web browser for this to - work. You may have to modify any firewall to permit port 8080 to be - accessed on your machine.<br> - <br> - Note that if you use this method of displaying test patches, that - there is no access to the display VideoLUTs and that the colors will - be displayed with 8 bit per component precision, and any - screen-saver or power-saver will not be disabled. You will also be - at the mercy of any color management applied by the web browser, and - may have to carefully review and configure such color management. - See the <a href="dispcal.html#o">-o</a> flag for an explanation of - the implications of having no access to the VideoLUTs.<br> - <br> - <a name="dmadvr"></a><span style="font-weight: bold;">-dmadvr</span> - [MSWin only] causes test patches to be displayed using the MadVR - video renderer. Note that will have to start <b>MadTPG</b> before - running dispread, and that while you can adjust the "Test Pattern - Configuration" controls, you should <u>not</u> normally alter the - "Existing Calibration" controls, as dispread will set these - appropriately. See also <tt><a - href="dispread.html#V">-V</a> flag.</tt><br> - <br> - <a name="dcc"></a><span style="font-weight: bold;">-dcc</span> or <b>-dcc:<i>no</i></b> - causes test patches to be displayed using and available <a - href="http://en.wikipedia.org/wiki/Chromecast">ChromeCast</a> to - your TV. Use <b>-dcc:?</b> to display a list of ChromeCasts on your - local network. Note that the ChromeCast as a test patch source is - probably the<b> least accurate</b> of your choices, since it - up-samples the test patch and transforms from RGB to YCC and back, - but should be accurate within ± 1 bit. You may have to modify any - firewall to permit port 8081 to be accessed on your machine if it +
+ 1,2</span> . Some experimentation may be needed using <a
+ href="dispwin.html">dispwin</a> on such systems, to discover what
+ screen has access to the VideoLUT hardware, and which screens the
+ test patches appear on. You may be able to calibrate one screen, and
+ then share the calibration with another screen. Profiling can be
+ done independently to calibration.<br>
+ <br>
+ <a name="dweb"></a><span style="font-weight: bold;">-dweb</span> or
+ <span style="font-weight: bold;">-dweb:port</span> starts a
+ standalone web server on your machine, which then allows a local or
+ remote web browser to display the the color test patches. By default
+ port <span style="font-weight: bold;">8080</span> is used, but this
+ can be overridden by appending a <span style="font-weight: bold;">:</span>
+ and the port number i.e. <span style="font-weight: bold;">-dweb:8001</span>.
+ The URL will be <span style="font-weight: bold;">http://</span>
+ then name of the machine or its I.P. address followed by a colon and
+ the port number - e.g something like <span style="font-weight:
+ bold;">http://192.168.0.1:8080</span>. If you use the verbose
+ option (<span style="font-weight: bold;">-v</span>) then a likely
+ URL will be printed once the server is started, or you could run <span
+ style="font-weight: bold;">ipconfig</span> (MSWin) or <span
+ style="font-weight: bold;">/sbin/ifconfig</span> (Linux or OS X)
+ and identify an internet address for your machine that way. <b>
+ JavaScript</b> needs to be enabled in your web browser for this to
+ work. You may have to modify any firewall to permit port 8080 to be
+ accessed on your machine.<br>
+ <br>
+ Note that if you use this method of displaying test patches, that
+ there is no access to the display VideoLUTs and that the colors will
+ be displayed with 8 bit per component precision, and any
+ screen-saver or power-saver will not be disabled. You will also be
+ at the mercy of any color management applied by the web browser, and
+ may have to carefully review and configure such color management.
+ See the <a href="dispcal.html#o">-o</a> flag for an explanation of
+ the implications of having no access to the VideoLUTs.<br>
+ <br>
+ <a name="dmadvr"></a><span style="font-weight: bold;">-dmadvr</span>
+ [MSWin only] causes test patches to be displayed using the MadVR
+ video renderer. Note that will have to start <b>MadTPG</b> before
+ running dispread, and that while you can adjust the "Test Pattern
+ Configuration" controls, you should <u>not</u> normally alter the
+ "Existing Calibration" controls, as dispread will set these
+ appropriately. See also <tt><a
+ href="file:///D:/src/argyll/doc/dispread.html#V">-V</a> flag.</tt><br>
+ <br>
+ <a name="dcc"></a><span style="font-weight: bold;">-dcc</span> or <b>-dcc:<i>no</i></b>
+ causes test patches to be displayed using and available <a
+ href="http://en.wikipedia.org/wiki/Chromecast">ChromeCast</a> to
+ your TV. Use <b>-dcc:?</b> to display a list of ChromeCasts on your
+ local network. Note that the ChromeCast as a test patch source is
+ probably the<b> least accurate</b> of your choices, since it
+ up-samples the test patch and transforms from RGB to YCC and back,
+ but should be accurate within ± 1 bit. You may have to modify any
+ firewall to permit port 8081 to be accessed on your machine if it
falls back to the Default receiver (see <a href="Installing.html">installation - - instructions</a> for your platform).<br> - <br> - <a name="c"></a> <span style="font-weight: bold;">-c</span>: The - instrument is assumed to communicate through a USB or serial - communication port, and the port can be selected with the <b>-c</b> - option, if the instrument is not connected to the first port. If you - invoke <span style="font-weight: bold;">dispread</span> so as to - display the usage information (i.e. "dispread -?" or "dispread --"), - then the discovered USB and serial ports will be listed. On - UNIX/Linux, a list of all possible serial ports are shown, but not - all of them may actually be present on your system.<br> - <br> - <a name="p"></a>The <span style="font-weight: bold;">-p</span> flag - allows measuring in telephoto mode, using instruments that support - this mode, e.g. the ColorMunki. Telephoto mode is one for taking - emissive measurements from a distance (ie. telespectometer, - tele-colorimeter) mode, and typically would be used for measuring - projector type displays. If a device does not support a specific - telephoto mode, then the normal emissive mode may be suitable for - measuring projectors.<br> - <br> - <a name="y"></a>The <span style="font-weight: bold;">-y</span> flag - allows setting the Display Type. The selection typically determines - two aspects of of the instrument operation: <span - style="font-weight: bold;">1)</span> It may set the measuring mode - to suite <a - href="http://en.wikipedia.org/wiki/Comparison_of_display_technology"><span - style="font-weight: bold;">refresh</span> or <span - style="font-weight: bold;">non-refresh</span> displays</a>. - Typically only LCD (Liquid Crystal) displays have a non-refresh - nature. <span style="font-weight: bold;">2)</span> It may select an - instrument calibration matrix suitable for a particular display - type. The selections available depends on the type and model of - instrument, and a list of the options for the discovered instruments - will be shown in the <a href="ArgyllDoc.html#CmdLine">usage</a> - information. For more details on what particular instruments support - and how this works, see <a href="instruments.html">Operation of - particular instruments</a>. <b>3)</b> Any installed CCSS files - (if applicable), or CCMX files. These files are typically created - using <a href="ccxxmake.html">ccxxmake</a>, and installed using <a - href="oeminst.html">oeminst</a>. The default and Base Calibration - types will be indicated in the usage.<br> - <br> - <a name="s"></a><span style="font-weight: bold;">-s</span>: By - default only the colorimetric information (XYZ value) will be saved, - but for instruments that support spectral readings (such as the - Gretag Spectrolino), the <b>-s</b> option will save the spectral - readings to the .ti3 file as well.<br> - <br> - <a name="k"></a> <span style="font-weight: bold;">-k: </span>If a - display video lookup table calibration <a - href="File_Formats.html#.cal">.cal</a> file is provided, it will - be loaded into the display <span style="font-weight: bold;">VideoLUTs</span> - while the measurements are being taken, thereby being applied to the - measurement values, and the calibration will also included in the - resulting .ti3 data file, so that <a href="colprof.html">colprof</a> - can include it as a <span style="font-weight: bold;">vcgt</span> - tag in the resulting profile. This is the <span style="font-weight: - bold;">normal</span> way to profile a calibrated display. The - calibration file has usually been created using <a - href="dispcal.html">dispcal</a>. If the calibration file indicates - that the displays VideoLUTs are not accessible, or if they prove not - to be accessible, then dispread will switch to <span - style="font-weight: bold;">-K</span> mode (see below). If a - calibration file is not supplied using <b>-k</b> or <b>-K</b>, - then the display will be measured in whatever calibration state it - is in, and no calibration information is saved to the resulting .ti3 - file.<br> - If the calibration file provided created using video range encoding - (dispcal -E), then the <b>-E</b> option in dispread will be - triggered automatically.<br> - <span style="font-weight: bold;">NOTE</span> that the calibration is - loaded into the display hardware just before the instrument starts - measurement, after the test window first appears.<br> - <br> - <a name="K"></a> <span style="font-weight: bold;">-K: </span>If a - display video lookup table calibration <a - href="File_Formats.html#.cal">.cal</a> file is provided, it will - be applied to the test values for each measurement, and also - included in the resulting .ti3 data file, so that <a - href="colprof.html">colprof</a> can include it as a <span - style="font-weight: bold;">vcgt</span> tag in the resulting - profile. This is <span style="font-weight: bold;">NOT</span> - normally the best way to profile a calibrated display, since the - frame buffer may have lower precision than the VideoLUTs output - values. This is the way calibration should be applied if MadVR is - being used to display the test patches. If a calibration file is not - supplied using <b>-k</b> or <b>-K</b>, then the display will be - measured in whatever calibration state it is in, and no calibration - information is saved to the resulting .ti3 file.<br> - If the calibration file provided created using video range encoding - (dispcal -E), then the <b>-E</b> option in dispread will be - triggered automatically.<br> - <br> - <a name="V"></a><b>-V:</b> [MSWin] If using MadVR to display test - patches, then enable Color Managenent (3dLut). This would be used - for verification measurement.<br> - <br> - <a name="P"></a> The <span style="font-weight: bold;">-P</span> - parameter allows you to position and size the test patch window. By - default it is places in the center of the screen, and sized - appropriately for the type of instrument, or 10% of the width of the - display if the display size is unknown. The <span - style="font-weight: bold;">ho</span> and <span - style="font-weight: bold;">vo</span> values govern the horizontal - and vertical offset respectively. A value of 0.0 positions the - window to the far left or top of the screen, a value of 0.5 - positions it in the center of the screen (the default), and 1.0 - positions it to the far right or bottom of the screen. If three - parameters are provided, then the <span style="font-weight: bold;">ss</span> - parameter is a scale factor for the test window size. A value of 0.5 - for instance, would produce a half sized window. A value of 2.0 will - produce a double size window. If four parameters are provided, then - the last two set independent horizontal and vertical scaling - factors. Note that the ho,vo,ss or ho,vo,hs,vs numbers must be - specified as a single string (no space between the numbers and the - comma). For example, to create a double sized test window at the top - right of the screen, use <span style="font-weight: bold;">-P 1,0,2</span> - . To create a window twice as wide as high: <span - style="font-weight: bold;">-P 1,0,2,1</span>.<br> - <br> - <a name="F"></a> The <span style="font-weight: bold;">-F</span> - flag causes the while screen behind the test window to be masked - with black. This can aid black accuracy when measuring CRT displays - or projectors.<br> - <br> - <a name="E"></a> The <span style="font-weight: bold;">-E</span> - flag causes the test values to be scaled to the Video RGB encoding - range of 16/255 to 235/255. If the calibration file provided using - the <b>-k</b> or <b>-K</b> flag was created using video range - encoding, then this option will be triggered automatically. This - will also set quantization of 8 bits (see -Z flag below). If your - video connection is better than 8 bits (ie. 10 or 12 bits), then you - may wish to raise this default.<br> - <br> - <a name="Z"></a> <b>-Z nbits </b>Normally the target device values - are floating point numbers that may get rounded and quantized in the - process of printing them or reproducing them on the display device. - If some of this quantization can be accounted for, it may improve - the accuracy of the resulting profile, and the <span - style="font-weight: bold;">Q</span> parameter allows this - quantization to be specified. The parameter is the number of binary - digits (bits) that the device values should be quantized to. An idea - of the number of bits of precision that makes its way to your - display can be obtained by using <a href="dispcal.html#R">dispcal - -R</a> If Video encoding is selected (see -E flag above), then 8 - bits is selected by default. On systems using an VGA connection or - Display Port with a graphics card with VideoLUT entries with greater - than 8 bits depth, or if using the MadVR rendered with dithering, - then a higher bit depth is typically possible.<br> - <br> - <a name="n"></a><span style="font-weight: bold;">-n</span>: When - running on a UNIX based system that used the X11 Windowing System, <b>dispread</b> - normally selects the override redirect so that the test window will - appear above any other windows on the display. On some systems this - can interfere with window manager operation, and the <b>-n</b> - option turns this behaviour off.<br> - <br> - <a name="J"></a> The -<span style="font-weight: bold;">J</span> - option runs through the black and sensor relative calibration - routines for the Xrite DTP92 and DTP94 instrument, the black level - calibration for the Eye-One Display 1, and a CRT frequency - calibration for the Eye-One Display 2. For the black calibration the - instrument should be placed on an opaque, black surface, and any - stray light should be avoided by placing something opaque over the - instrument. If a Spectrolino is being used, then a white and black - calibration will always be performed before the instrument can be - placed on the display, unless the <a href="#N">-N</a> flag is used. - Generally it is not necessary to do a calibration every time an - instrument is used, just now and again. There is no point in - doing a CRT frequency calibration, as this will be done - automatically at the commencement of patch reading.<br> - <br> - <a name="N"></a> <span style="font-weight: bold;">-N</span> Any - instrument that requires regular calibration will ask for - calibration on initial start-up. Sometimes this can be awkward if - the instrument is being mounted in some sort of measuring jig, or - annoying if several sets of readings are being taken in quick - succession. The -<span style="font-weight: bold;">N</span> - suppresses this initial calibration if a valid and not timed out - previous calibration is recorded in the instrument or on the host - computer. It is advisable to only use this option on the second and - subsequent measurements in a single session.<br> - <br> - <a name="H"></a> The -<span style="font-weight: bold;">H</span> - option turns on high resolution spectral mode, if the instrument - supports it. See <a href="instruments.html">Operation of particular - instruments</a> for more details. This may give better accuracy - for display measurements.<br> - <br> - <a name="w"></a>The <b>-w</b> flag disables the normalisation of - the white patch value to 100.0, resulting in values that are in - cd/m^2. This is mainly for diagnostic purposes.<br> - <br> - <a name="X1"></a> The -<span style="font-weight: bold;">X <span - style="font-style: italic;">file.ccmx</span></span> option reads - a <a href="File_Formats.html#.ccmx">Colorimeter Correction Matrix</a> - from the given file, and applies it to the colorimeter instruments - readings. This can improve a colorimeters accuracy for a particular - type of display. A list of contributed <span style="font-weight: - bold;">ccmx</span> files is <a href="ccmxs.html">here</a>.<br> - <br> - <a name="X2"></a> The -<span style="font-weight: bold;">X <span - style="font-style: italic;">file.ccss</span></span> option reads - a <a href="File_Formats.html#.ccss">Colorimeter Calibration - Spectral Sample</a> from the given file, and uses it to set the - colorimeter instruments calibration. This will only work with - colorimeters that rely on sensor spectral sensitivity calibration - information (ie. the X-Rite <span style="font-weight: bold;">i1d3</span>, - or the DataColor <span style="font-weight: bold;">Spyder4 & - Spyder 5</span>).This can improve a colorimeters accuracy for a - particular type of display.<br> - <br> - <a name="Q"></a> The <b>-Q</b> flag allows specifying a tristimulus - observer, and is used to compute PCS (Profile Connection Space) - tristimulus values from spectral readings or using a colorimeter - that has CCSS capability. The following choices are available:<br> - <b> 1931_2</b> selects the standard CIE 1931 2 degree - observer. The default.<br> - <b>1964_10</b> selects the standard CIE 1964 10 degree - observer.<br> - <b>1955_2</b> selects the Stiles and Birch 1955 2 degree - observer<br> - <b>1978_2 </b>selects the Judd and Voss 1978 2 degree - observer<br> - <b>shaw</b> selects the Shaw and Fairchild 1997 2 degree - observer<br> - <b>1964_10c</b> selects a version of the CIE 1964 10 degree - observer that has been adjusted using a 3x3 matrix to better agree - with the 1931 2 degree observer.<br> - <br> - <span style="font-weight: bold;">NOTE</span> that if you select - anything other than the default 1931 2 degree observer, that the Y - values will not be cd/m^2, due to the Y curve not being the CIE 1924 - photopic V(λ) luminosity function.<br> - <br> - <a name="I"></a> The -<span style="font-weight: bold;">I <span - style="font-style: italic;">b|w</span></span> options invoke - instrument black level, and display white level compensation - (respectively). Instrument black level drift compensation attempts - to combat instrument black calibration drift by using a display - black test patch as a reference. If an instrument is not - acclimatised sufficiently to the measurement conditions, changes in - temperature can affect the black readings. Display white level drift - compensation attempts to combat changes in display brightness as it - warms up by measuring a white patch every so often, and using it to - normalise all the other readings. If just instrument black drift - compensation is needed, use <span style="font-weight: bold;">-Ib</span>. - If just display white level compensation is needed, use <span - style="font-weight: bold;">-Iw</span>. If both are needed, use <span - style="font-weight: bold;">-Ibw</span> or <span - style="font-weight: bold;">-Iwb</span>.<br> - <br> - <a name="YR"></a> The -<span style="font-weight: bold;">Y R:<i>rate</i></span> - options overrides calibration of the instrument refresh rate. This - may be useful if the instrument supports this function and the - refresh rate cannot be accurately calibrated from the display - itself.<br> - <span style="font-weight: bold;"> <br> - </span><a name="YA"></a> The -<span style="font-weight: bold;">Y A</span> - option uses a non-adaptive integration time emission measurement - mode, if the instrument supports it, such as the Eye-One Pro, - ColorMunki, i1d3 and K10. By default an adaptive integration time - measurement mode will be used for emission measurements, but some - instruments support a fixed integration time mode that can be used - with display devices. This may give faster measurement times, but - may also give less accurate low level readings.<br> - <br> - <a name="Yp"></a> The -<span style="font-weight: bold;">Y p</span> - option skips asking the user to place the instrument on the display. - Normally a grey patch is displayed, and then the user is asked to - confirm that the instrument is in place, so that readings can - commence. This flag disables that check. This may be useful in - automating certain operations.<br> - <span style="font-weight: bold;"><br> - </span><a name="C"></a> The -<span style="font-weight: bold;">C</span> - <span style="font-weight: bold;">"command" </span>option allows a - method of relaying each test value to some other display than that - on the system running dispread (for instance, a photo frame, PDA - screen etc.), by causing the given command to be invoked to the - shell, with six arguments. The first three arguments are the RGB - test color as integers in the range 0 to 255, the second three - parameters are the RGB test color as floating point numbers in the - range 0.0 to 1.0. The script or tool should relay the given color to - the screen in some manner (e.g. by generating a raster file of the - given color and sending it to the display being profiled), before - returning. Note that a test window will also be created on the - system running dispread.<br> - <br> - <a name="M"></a> The -<span style="font-weight: bold;">M</span> <span - style="font-weight: bold;">"command" </span>option allows a - method of gathering each test value from some external source, such - as an instrument that is not directly supported by Argyll. The given - command is involked to the shell, with six arguments. The first - three arguments are the RGB test color as integers in the range 0 to - 255, the second three parameters are the RGB test color as floating - point numbers in the range 0.0 to 1.0. The script or tool should - create a file called <span style="font-weight: bold;">"command.meas</span>" - that contains the XYZ values for the given RGB (or measured from the - test window) in cd/m^2 as three numbers separated by spaces, before - returning. If the command returns a non-zero return value, dispread - will abort. Note that a test window will also be created on the - system running dispread.<br> - <br> - <a name="x"></a> The <b>-x</b> flag causes dispread to expect - values to be manually entered for each reading, rather than using an - instrument to do the measurements. This mode is ideal if your - instrument is not supported by Argyll. XYZ values should be entered. - It is possible to navigate about the test values being measured, so - as to do them in any order, as well as re-do values, in case of any - mistakes.<br> - <br> - <a name="W"></a>The <b>-W</b> <span style="font-weight: bold;">n|h|x</span> - parameter overrides the default serial communications flow control - setting. The value <span style="font-weight: bold;">n</span> turns - all flow control off, <span style="font-weight: bold;">h</span> - sets hardware handshaking, and <span style="font-weight: bold;">x</span> - sets Xon/Xoff handshaking. This commend may be useful in workaround - serial communications issues with some systems and cables. <br> - <br> - <a name="D"></a>The <b>-D</b> flag causes communications and other - instrument diagnostics to be printed to stdout. A level can be set - between 1 .. 9, that may give progressively more verbose - information, depending on the instrument. This can be useful in - tracking down why an instrument can't connect.<br> - <br> - <a name="p1"></a> The final parameter on the command line is the - base filename for the <a href="File_Formats.html#.ti1">.ti1</a> - input file, and the <a href="File_Formats.html#.ti3">.ti3</a> - output file. <b>dispread</b> will add the .ti1 and .ti3 extensions - automatically.<br> - <br> - <span style="font-weight: bold;">NOTE</span> that on an X11 system, - if the environment variable <span style="font-weight: bold;">ARGYLL_IGNORE_XRANDR1_2</span> - is set (ie. set it to "yes"), then the presence of the XRandR 1.2 - extension will be ignored, and other extensions such as Xinerama and - XF86VidMode extension will be used. This may be a way to work around - buggy XRandR 1.2 implementations.<br> - <br> - <hr style="width: 100%; height: 2px;"><br> - If a large number of patches is being read, the screensaver on many - systems can interfere with the operation of dispread. It is - therefore advisable in these cases to manually turn off the - screensaver before commencing the measurements.<br> - <br> - If communications break down with a USB connected instrument, you - may have to unplug it, and plug it in again to recover.<br> - <br> - Some systems (Apple OSX in particular) have a special set of user - interface controls ("Universal Access") that allows altering the - display in ways designed to assist visually impaired users, by - increasing contrast etc. This will interfere badly with any attempts - to calibrate or profile such a system, and must be turned off in - order to do so. Note that certain magic keyboard sequences can turn - this on by accident.<br> - <br> - <br> - <br> - </body> -</html> +
+ instructions</a> for your platform).<br>
+ <br>
+ <a name="c"></a> <span style="font-weight: bold;">-c</span>: The
+ instrument is assumed to communicate through a USB or serial
+ communication port, and the port can be selected with the <b>-c</b>
+ option, if the instrument is not connected to the first port. If you
+ invoke <span style="font-weight: bold;">dispread</span> so as to
+ display the usage information (i.e. "dispread -?" or "dispread --"),
+ then the discovered USB and serial ports will be listed. On
+ UNIX/Linux, a list of all possible serial ports are shown, but not
+ all of them may actually be present on your system.<br>
+ <br>
+ <a name="p"></a>The <span style="font-weight: bold;">-p</span> flag
+ allows measuring in telephoto mode, using instruments that support
+ this mode, e.g. the ColorMunki. Telephoto mode is one for taking
+ emissive measurements from a distance (ie. telespectometer,
+ tele-colorimeter) mode, and typically would be used for measuring
+ projector type displays. If a device does not support a specific
+ telephoto mode, then the normal emissive mode may be suitable for
+ measuring projectors.<br>
+ <br>
+ <a name="y"></a>The <span style="font-weight: bold;">-y</span> flag
+ allows setting the Display Type. The selection typically determines
+ two aspects of of the instrument operation: <span
+ style="font-weight: bold;">1)</span> It may set the measuring mode
+ to suite <a
+ href="http://en.wikipedia.org/wiki/Comparison_of_display_technology"><span
+ style="font-weight: bold;">refresh</span> or <span
+ style="font-weight: bold;">non-refresh</span> displays</a>.
+ Typically only LCD (Liquid Crystal) displays have a non-refresh
+ nature. <span style="font-weight: bold;">2)</span> It may select an
+ instrument calibration matrix suitable for a particular display
+ type. The selections available depends on the type and model of
+ instrument, and a list of the options for the discovered instruments
+ will be shown in the <a href="ArgyllDoc.html#CmdLine">usage</a>
+ information. For more details on what particular instruments support
+ and how this works, see <a href="instruments.html">Operation of
+ particular instruments</a>. <b>3)</b> Any installed CCSS files
+ (if applicable), or CCMX files. These files are typically created
+ using <a href="ccxxmake.html">ccxxmake</a>, and installed using <a
+ href="oeminst.html">oeminst</a>. The default and Base Calibration
+ types will be indicated in the usage.<br>
+ <br>
+ <a name="s"></a><span style="font-weight: bold;">-s</span>: By
+ default only the colorimetric information (XYZ value) will be saved,
+ but for instruments that support spectral readings (such as the
+ Gretag Spectrolino), the <b>-s</b> option will save the spectral
+ readings to the .ti3 file as well.<br>
+ <br>
+ <a name="k"></a> <span style="font-weight: bold;">-k: </span>If a
+ display video lookup table calibration <a
+ href="File_Formats.html#.cal">.cal</a> file is provided, it will
+ be loaded into the display <span style="font-weight: bold;">VideoLUTs</span>
+ while the measurements are being taken, thereby being applied to the
+ measurement values, and the calibration will also included in the
+ resulting .ti3 data file, so that <a href="colprof.html">colprof</a>
+ can include it as a <span style="font-weight: bold;">vcgt</span>
+ tag in the resulting profile. This is the <span style="font-weight:
+ bold;">normal</span> way to profile a calibrated display. The
+ calibration file has usually been created using <a
+ href="dispcal.html">dispcal</a>. If the calibration file indicates
+ that the displays VideoLUTs are not accessible, or if they prove not
+ to be accessible, then dispread will switch to <span
+ style="font-weight: bold;">-K</span> mode (see below). If a
+ calibration file is not supplied using <b>-k</b> or <b>-K</b>,
+ then the display will be measured in whatever calibration state it
+ is in, and no calibration information is saved to the resulting .ti3
+ file.<br>
+ If the calibration file provided created using video range encoding
+ (dispcal -E), then the <b>-E</b> option in dispread will be
+ triggered automatically.<br>
+ <span style="font-weight: bold;">NOTE</span> that the calibration is
+ loaded into the display hardware just before the instrument starts
+ measurement, after the test window first appears.<br>
+ <br>
+ <a name="K"></a> <span style="font-weight: bold;">-K: </span>If a
+ display video lookup table calibration <a
+ href="File_Formats.html#.cal">.cal</a> file is provided, it will
+ be applied to the test values for each measurement, and also
+ included in the resulting .ti3 data file, so that <a
+ href="colprof.html">colprof</a> can include it as a <span
+ style="font-weight: bold;">vcgt</span> tag in the resulting
+ profile. This is <span style="font-weight: bold;">NOT</span>
+ normally the best way to profile a calibrated display, since the
+ frame buffer may have lower precision than the VideoLUTs output
+ values. This is the way calibration should be applied if MadVR is
+ being used to display the test patches. If a calibration file is not
+ supplied using <b>-k</b> or <b>-K</b>, then the display will be
+ measured in whatever calibration state it is in, and no calibration
+ information is saved to the resulting .ti3 file.<br>
+ If the calibration file provided created using video range encoding
+ (dispcal -E), then the <b>-E</b> option in dispread will be
+ triggered automatically.<br>
+ <br>
+ <a name="V"></a><b>-V:</b> [MSWin] If using MadVR to display test
+ patches, then enable Color Managenent (3dLut). This would be used
+ for verification measurement.<br>
+ <br>
+ <a name="P"></a> The <span style="font-weight: bold;">-P</span>
+ parameter allows you to position and size the test patch window. By
+ default it is places in the center of the screen, and sized
+ appropriately for the type of instrument, or 10% of the width of the
+ display if the display size is unknown. The <span
+ style="font-weight: bold;">ho</span> and <span
+ style="font-weight: bold;">vo</span> values govern the horizontal
+ and vertical offset respectively. A value of 0.0 positions the
+ window to the far left or top of the screen, a value of 0.5
+ positions it in the center of the screen (the default), and 1.0
+ positions it to the far right or bottom of the screen. If three
+ parameters are provided, then the <span style="font-weight: bold;">ss</span>
+ parameter is a scale factor for the test window size. A value of 0.5
+ for instance, would produce a half sized window. A value of 2.0 will
+ produce a double size window. If four parameters are provided, then
+ the last two set independent horizontal and vertical scaling
+ factors. Note that the ho,vo,ss or ho,vo,hs,vs numbers must be
+ specified as a single string (no space between the numbers and the
+ comma). For example, to create a double sized test window at the top
+ right of the screen, use <span style="font-weight: bold;">-P 1,0,2</span>
+ . To create a window twice as wide as high: <span
+ style="font-weight: bold;">-P 1,0,2,1</span>.<br>
+ <br>
+ <a name="F"></a> The <span style="font-weight: bold;">-F</span>
+ flag causes the while screen behind the test window to be masked
+ with black. This can aid black accuracy when measuring CRT displays
+ or projectors.<br>
+ <br>
+ <a name="E"></a> The <span style="font-weight: bold;">-E</span>
+ flag causes the test values to be scaled to the Video RGB encoding
+ range of 16/255 to 235/255. If the calibration file provided using
+ the <b>-k</b> or <b>-K</b> flag was created using video range
+ encoding, then this option will be triggered automatically. This
+ will also set quantization of 8 bits (see -Z flag below). If your
+ video connection is better than 8 bits (ie. 10 or 12 bits), then you
+ may wish to raise this default.<br>
+ <br>
+ <a name="Z"></a> <b>-Z nbits </b>Normally the target device values
+ are floating point numbers that may get rounded and quantized in the
+ process of printing them or reproducing them on the display device.
+ If some of this quantization can be accounted for, it may improve
+ the accuracy of the resulting profile, and the <span
+ style="font-weight: bold;">Q</span> parameter allows this
+ quantization to be specified. The parameter is the number of binary
+ digits (bits) that the device values should be quantized to. An idea
+ of the number of bits of precision that makes its way to your
+ display can be obtained by using <a href="dispcal.html#R">dispcal
+ -R</a> If Video encoding is selected (see -E flag above), then 8
+ bits is selected by default. On systems using an VGA connection or
+ Display Port with a graphics card with VideoLUT entries with greater
+ than 8 bits depth, or if using the MadVR rendered with dithering,
+ then a higher bit depth is typically possible.<br>
+ <br>
+ <a name="n"></a><span style="font-weight: bold;">-n</span>: When
+ running on a UNIX based system that used the X11 Windowing System, <b>dispread</b>
+ normally selects the override redirect so that the test window will
+ appear above any other windows on the display. On some systems this
+ can interfere with window manager operation, and the <b>-n</b>
+ option turns this behaviour off.<br>
+ <br>
+ <a name="J"></a> The -<span style="font-weight: bold;">J</span>
+ option runs through the black and sensor relative calibration
+ routines for the Xrite DTP92 and DTP94 instrument, the black level
+ calibration for the Eye-One Display 1, and a CRT frequency
+ calibration for the Eye-One Display 2. For the black calibration the
+ instrument should be placed on an opaque, black surface, and any
+ stray light should be avoided by placing something opaque over the
+ instrument. If a Spectrolino is being used, then a white and black
+ calibration will always be performed before the instrument can be
+ placed on the display, unless the <a href="#N">-N</a> flag is used.
+ Generally it is not necessary to do a calibration every time an
+ instrument is used, just now and again. There is no point in
+ doing a CRT frequency calibration, as this will be done
+ automatically at the commencement of patch reading.<br>
+ <br>
+ <a name="N"></a> <span style="font-weight: bold;">-N</span> Any
+ instrument that requires regular calibration will ask for
+ calibration on initial start-up. Sometimes this can be awkward if
+ the instrument is being mounted in some sort of measuring jig, or
+ annoying if several sets of readings are being taken in quick
+ succession. The -<span style="font-weight: bold;">N</span>
+ suppresses this initial calibration if a valid and not timed out
+ previous calibration is recorded in the instrument or on the host
+ computer. It is advisable to only use this option on the second and
+ subsequent measurements in a single session.<br>
+ <br>
+ <a name="H"></a> The -<span style="font-weight: bold;">H</span>
+ option turns on high resolution spectral mode, if the instrument
+ supports it. See <a href="instruments.html">Operation of particular
+ instruments</a> for more details. This may give better accuracy
+ for display measurements.<br>
+ <br>
+ <a name="w"></a>The <b>-w</b> flag disables the normalisation of
+ the white patch value to 100.0, resulting in values that are in
+ cd/m^2. This is mainly for diagnostic purposes.<br>
+ <br>
+ <a name="X1"></a> The -<span style="font-weight: bold;">X <span
+ style="font-style: italic;">file.ccmx</span></span> option reads
+ a <a href="File_Formats.html#.ccmx">Colorimeter Correction Matrix</a>
+ from the given file, and applies it to the colorimeter instruments
+ readings. This can improve a colorimeters accuracy for a particular
+ type of display. A list of contributed <span style="font-weight:
+ bold;">ccmx</span> files is <a href="ccmxs.html">here</a>.<br>
+ <br>
+ <a name="X2"></a> The -<span style="font-weight: bold;">X <span
+ style="font-style: italic;">file.ccss</span></span> option reads
+ a <a href="File_Formats.html#.ccss">Colorimeter Calibration
+ Spectral Sample</a> from the given file, and uses it to set the
+ colorimeter instruments calibration. This will only work with
+ colorimeters that rely on sensor spectral sensitivity calibration
+ information (ie. the X-Rite <span style="font-weight: bold;">i1d3</span>,
+ or the DataColor <span style="font-weight: bold;">Spyder4 &
+ Spyder 5</span>).This can improve a colorimeters accuracy for a
+ particular type of display.<br>
+ <br>
+ <a name="Q"></a> The <b>-Q</b> flag allows specifying a tristimulus
+ observer, and is used to compute PCS (Profile Connection Space)
+ tristimulus values from spectral readings or using a colorimeter
+ that has CCSS capability. The following choices are available:<br>
+ <b> 1931_2</b> selects the standard CIE 1931 2 degree
+ observer. The default.<br>
+ <b>1964_10</b> selects the standard CIE 1964 10 degree
+ observer.<br>
+ <b>1955_2</b> selects the Stiles and Birch 1955 2 degree
+ observer<br>
+ <b>1978_2 </b>selects the Judd and Voss 1978 2 degree
+ observer<br>
+ <b>shaw</b> selects the Shaw and Fairchild 1997 2 degree
+ observer<br>
+ <b>1964_10c</b> selects a version of the CIE 1964 10 degree
+ observer that has been adjusted using a 3x3 matrix to better agree
+ with the 1931 2 degree observer.<br>
+ <br>
+ <span style="font-weight: bold;">NOTE</span> that if you select
+ anything other than the default 1931 2 degree observer, that the Y
+ values will not be cd/m^2, due to the Y curve not being the CIE 1924
+ photopic V(λ) luminosity function.<br>
+ <br>
+ <a name="I"></a> The -<span style="font-weight: bold;">I <span
+ style="font-style: italic;">b|w</span></span> options invoke
+ instrument black level, and display white level compensation
+ (respectively). Instrument black level drift compensation attempts
+ to combat instrument black calibration drift by using a display
+ black test patch as a reference. If an instrument is not
+ acclimatised sufficiently to the measurement conditions, changes in
+ temperature can affect the black readings. Display white level drift
+ compensation attempts to combat changes in display brightness as it
+ warms up by measuring a white patch every so often, and using it to
+ normalise all the other readings. If just instrument black drift
+ compensation is needed, use <span style="font-weight: bold;">-Ib</span>.
+ If just display white level compensation is needed, use <span
+ style="font-weight: bold;">-Iw</span>. If both are needed, use <span
+ style="font-weight: bold;">-Ibw</span> or <span
+ style="font-weight: bold;">-Iwb</span>.<br>
+ <br>
+ <a name="YR"></a> The -<span style="font-weight: bold;">Y R:<i>rate</i></span>
+ options overrides calibration of the instrument refresh rate. This
+ may be useful if the instrument supports this function and the
+ refresh rate cannot be accurately calibrated from the display
+ itself.<br>
+ <span style="font-weight: bold;"> <br>
+ </span><a name="YA"></a> The -<span style="font-weight: bold;">Y A</span>
+ option uses a non-adaptive integration time emission measurement
+ mode, if the instrument supports it, such as the Eye-One Pro,
+ ColorMunki, i1d3 and K10. By default an adaptive integration time
+ measurement mode will be used for emission measurements, but some
+ instruments support a fixed integration time mode that can be used
+ with display devices. This may give faster measurement times, but
+ may also give less accurate low level readings.<br>
+ <br>
+ <a name="Yp"></a> The -<span style="font-weight: bold;">Y p</span>
+ option skips asking the user to place the instrument on the display.
+ Normally a grey patch is displayed, and then the user is asked to
+ confirm that the instrument is in place, so that readings can
+ commence. This flag disables that check. This may be useful in
+ automating certain operations.<br>
+ <span style="font-weight: bold;"><br>
+ </span><a name="C"></a> The -<span style="font-weight: bold;">C</span>
+ <span style="font-weight: bold;">"command" </span>option allows a
+ method of relaying each test value to some other display than that
+ on the system running dispread (for instance, a photo frame, PDA
+ screen etc.), by causing the given command to be invoked to the
+ shell, with six arguments. The first three arguments are the RGB
+ test color as integers in the range 0 to 255, the second three
+ parameters are the RGB test color as floating point numbers in the
+ range 0.0 to 1.0. The script or tool should relay the given color to
+ the screen in some manner (e.g. by generating a raster file of the
+ given color and sending it to the display being profiled), before
+ returning. Note that a test window will also be created on the
+ system running dispread.<br>
+ <br>
+ <a name="M"></a> The -<span style="font-weight: bold;">M</span> <span
+ style="font-weight: bold;">"command" </span>option allows a
+ method of gathering each test value from some external source, such
+ as an instrument that is not directly supported by Argyll. The given
+ command is involked to the shell, with six arguments. The first
+ three arguments are the RGB test color as integers in the range 0 to
+ 255, the second three parameters are the RGB test color as floating
+ point numbers in the range 0.0 to 1.0. The script or tool should
+ create a file called <span style="font-weight: bold;">"command.meas</span>"
+ that contains the XYZ values for the given RGB (or measured from the
+ test window) in cd/m^2 as three numbers separated by spaces, before
+ returning. If the command returns a non-zero return value, dispread
+ will abort. Note that a test window will also be created on the
+ system running dispread.<br>
+ <br>
+ <a name="x"></a> The <b>-x</b> flag causes dispread to expect
+ values to be manually entered for each reading, rather than using an
+ instrument to do the measurements. This mode is ideal if your
+ instrument is not supported by Argyll. XYZ values should be entered.
+ It is possible to navigate about the test values being measured, so
+ as to do them in any order, as well as re-do values, in case of any
+ mistakes.<br>
+ <br>
+ <a name="W"></a>The <b>-W</b> <span style="font-weight: bold;">n|h|x</span>
+ parameter overrides the default serial communications flow control
+ setting. The value <span style="font-weight: bold;">n</span> turns
+ all flow control off, <span style="font-weight: bold;">h</span>
+ sets hardware handshaking, and <span style="font-weight: bold;">x</span>
+ sets Xon/Xoff handshaking. This commend may be useful in workaround
+ serial communications issues with some systems and cables. <br>
+ <br>
+ <a name="D"></a>The <b>-D</b> flag causes communications and other
+ instrument diagnostics to be printed to stdout. A level can be set
+ between 1 .. 9, that may give progressively more verbose
+ information, depending on the instrument. This can be useful in
+ tracking down why an instrument can't connect.<br>
+ <br>
+ <a name="p1"></a> The final parameter on the command line is the
+ base filename for the <a href="File_Formats.html#.ti1">.ti1</a>
+ input file, and the <a href="File_Formats.html#.ti3">.ti3</a>
+ output file. <b>dispread</b> will add the .ti1 and .ti3 extensions
+ automatically.<br>
+ <br>
+ <span style="font-weight: bold;">NOTE</span> that on an X11 system,
+ if the environment variable <span style="font-weight: bold;">ARGYLL_IGNORE_XRANDR1_2</span>
+ is set (ie. set it to "yes"), then the presence of the XRandR 1.2
+ extension will be ignored, and other extensions such as Xinerama and
+ XF86VidMode extension will be used. This may be a way to work around
+ buggy XRandR 1.2 implementations.<br>
+ <br>
+ <hr style="width: 100%; height: 2px;"><br>
+ If a large number of patches is being read, the screensaver on many
+ systems can interfere with the operation of dispread. It is
+ therefore advisable in these cases to manually turn off the
+ screensaver before commencing the measurements.<br>
+ <br>
+ If communications break down with a USB connected instrument, you
+ may have to unplug it, and plug it in again to recover.<br>
+ <br>
+ Some systems (Apple OSX in particular) have a special set of user
+ interface controls ("Universal Access") that allows altering the
+ display in ways designed to assist visually impaired users, by
+ increasing contrast etc. This will interfere badly with any attempts
+ to calibrate or profile such a system, and must be turned off in
+ order to do so. Note that certain magic keyboard sequences can turn
+ this on by accident.<br>
+ <br>
+ <br>
+ <br>
+ </body>
+</html>
|