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diff --git a/doc/invprofcheck.html b/doc/invprofcheck.html index bd611b3..65502ee 100644..100755 --- a/doc/invprofcheck.html +++ b/doc/invprofcheck.html @@ -1,133 +1,168 @@ <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> -<head> - <title>invprofcheck</title> - <meta http-equiv="content-type" - content="text/html; charset=ISO-8859-1"> - <meta name="author" content="Graeme Gill"> -</head> -<body> -<h2><b>profile/invprofcheck</b></h2> -<h3>Summary</h3> -Check <a href="File_Formats.html#ICC">ICC</a> forward against reverse -lookup. -<br> -<h3>Usage Summary</h3> -<small><span style="font-family: monospace;">usage: invprofcheck -[-options] </span><span - style="font-style: italic; font-family: monospace;">profile.icm</span><br - style="font-family: monospace;"> -<span style="font-family: monospace;"> -v [level] -verbosity level (default 1), 2 to print each DE</span><br - style="font-family: monospace;"> -<span style="font-family: monospace;"> -l -limit set total ink -limit (estimate by default)<br> -</span></small><small><span style="font-family: monospace;"> -L -klimit set black channel ink -limit (estimate by default)</span></small><br - style="font-family: monospace;"> -<small><span style="font-family: monospace;"></span><span - style="font-family: monospace;"> -h -high res test (27)</span><br style="font-family: monospace;"> -<span style="font-family: monospace;"> -u -Ultra high res test (61)<br> - -R res Specific grid -resolution<br style="font-family: monospace;"> -</span><span style="font-family: monospace;"> -c -Show CIE94 delta E values</span><br style="font-family: monospace;"> -<span style="font-family: monospace;"> -k -Show CIEDE2000 delta E values</span><br style="font-family: monospace;"> -<span style="font-family: monospace;"> -w -create X3DOM visualisation (profile.x3d.html)</span><br - style="font-family: monospace;"> -<span style="font-family: monospace;"> -x -Use X3DOM axes</span><br style="font-family: monospace;"> -<span style="font-family: monospace;"> -e -Color vectors acording to delta E</span><br - style="font-family: monospace;"> -<span style="font-style: italic; font-family: monospace;"> profile.icm</span><span - style="font-family: monospace;"> -Profile to check</span></small> -<br> -<h3>Usage Details and Discussion</h3> -<b>invprofcheck</b> provides a way of checking how well an <a - href="File_Formats.html#ICC">ICC</a> profile inverse transform inverts -the forward transform. For devices with more than 4 channels, a total -ink limit is assumed, and (if no <span style="font-weight: bold;">-l</span> -parameter is given) a reasonable number is deduced from the reverse -table. A grid of device values is created, and the transform from -PCS->device, and then device->PCS is computed in L*a*b* space. -The average, maximum and RMS error delta E values are computed and -displayed in the chosen delta E metric. A <a - href="File_Formats.html#X3DOM">X3DOM</a> plot of the error vectors can -be created. <span style="font-weight: bold;">invprofcheck</span> tries -to only test in-gamut color values. Note that because it scans a device -grid, for a CMYK device, the density of test points will be -progressively higher in the dark regions, and the average and RMS -values will be distorted by the denser sampling.<br> -<br> -The <b>-v</b> flag prints out extra information during the checking. A -value greater than 1 will print the color values of each test point.<br> -<br> -The <b>-l</b> flag allows setting a total ink limit (TAC) for printing -devices. If a device has a total ink limit, and hasn't been -characterised with device values above this limit, then plotting the -gamut in these areas will almost certainly be misleading. The ink limit -will be in final calibrated device values if the profile includes -calibration information.<br> -<br> -The <b>-L</b> flag allows setting a black channel ink limit for -printing -devices. If a device has a black ink limit, and hasn't been -characterised with device values above this limit, then plotting the -gamut in these areas will almost certainly be misleading. The black ink -limit -will be final calibrated device values if the profile -includes calibration information.<br> -<br> -The default device grid is relativy low, and 11 (ie. 11 x 11 x 11 for -an RGB device, 11 x 11 x 11 x 11 for a CMYK device etc.).<br> -<br> -The <span style="font-weight: bold;">-h</span> flag selects a higher -device grid resolution of 27.<br> -<br> -The <span style="font-weight: bold;">-u</span> flag selects an -extremely high device grid resolution of 61. This will probably take a -long time to run.<br> -<br> -The <span style="font-weight: bold;">-G res</span> option allows a -specific grid resolution to be used.<br> -<br> -The <b>-c</b> option causes the error differences to be -displayed -in CIE94 delta E, rather than plain L*a*b* delta E. CIE94 delta E has a -closer -correspondence with perceived color differences than the default CIE76 -delta E values.<br> -<br> -The <b>-k</b> option causes the error differences to be -displayed -in CIEDE2000 delta E, rather than plain L*a*b* delta E. CIEDE2000 delta -E has a -closer -correspondence with perceived color differences than either CIE76 or -CIE94 delta E values.<br> -<br> -The <b>-w</b> creates a <a href="File_Formats.html#X3DOM">X3DOM</a> 3D -visualization -of the differences between the test points and the profiles prediction -of -the resulting colors.<br> -<br> -The <b>-x</b> flag adds Lab axes to the X3DOM output.<br> -<br> -The <span style="font-weight: bold;">-e</span> flag causes the error -vectors in the X3DOM output to be color coded according to their -lengths, from longest to shortest: yellow, red, magenta, blue, cyan and -green.<br> -<br> -<br> -<br> -</body> + <head> + <title>invprofcheck</title> + <meta http-equiv="content-type" content="text/html; + charset=windows-1252"> + <meta name="author" content="Graeme Gill"> + </head> + <body> + <h2><b>profile/invprofcheck</b></h2> + <h3>Summary</h3> + Check <a href="File_Formats.html#ICC">ICC</a> forward against + reverse + lookup. + <br> + <h3>Usage Summary</h3> + <small><span style="font-family: monospace;">usage: invprofcheck + [-options] </span><span style="font-style: italic; font-family: + monospace;">profile.icm</span><br style="font-family: + monospace;"> + <span style="font-family: monospace;"> -v [level] + verbosity level (default 1), 2 to print each DE</span><br + style="font-family: monospace;"> + <span style="font-family: monospace;"> -l + limit set total ink + limit (estimate by default)<br> + </span></small><small><span style="font-family: monospace;"> -L +klimit + set black channel ink + limit (estimate by default)</span></small><br + style="font-family: monospace;"> + <small><span style="font-family: monospace;"></span><span + style="font-family: monospace;"> -h +high + res test (27)</span><br style="font-family: monospace;"> + <span style="font-family: monospace;"> -u +Ultra + high res test (61)<br> + -R res Specific grid + resolution<br> + -I + Do bwd to fwd check<br style="font-family: monospace;"> + </span><span style="font-family: monospace;"> -c +Show + CIE94 delta E values</span><br style="font-family: monospace;"> + <span style="font-family: monospace;"> -k +Show + CIEDE2000 delta E values</span><br style="font-family: + monospace;"> + <span style="font-family: monospace;"> -w +create + X3DOM visualisation (profile.x3d.html)</span><br + style="font-family: monospace;"> + <span style="font-family: monospace;"> -x +Use + X3DOM axes</span><br style="font-family: monospace;"> + <span style="font-family: monospace;"> -e +Color + vectors acording to delta E</span><br style="font-family: + monospace;"> + <span style="font-style: italic; font-family: monospace;"> profile.icm</span><span + style="font-family: monospace;"> + Profile to check</span></small> + <br> + <h3>Usage Details and Discussion</h3> + <b>invprofcheck</b> provides a way of checking how well an <a + href="File_Formats.html#ICC">ICC</a> profile inverse transform + inverts + the forward transform. For devices with more than 4 channels, a + total + ink limit is assumed, and (if no <span style="font-weight: bold;">-l</span> + parameter is given) a reasonable number is deduced from the reverse + table. A grid of device values is created, and the transform from + PCS->device, and then device->PCS is computed in L*a*b* space. + The average, maximum and RMS error delta E values are computed and + displayed in the chosen delta E metric. A <a + href="File_Formats.html#X3DOM">X3DOM</a> plot of the error vectors + can + be created. <span style="font-weight: bold;">invprofcheck</span> + tries + to only test in-gamut color values. Note that because it scans a + device + grid, for a CMYK device, the density of test points will be + progressively higher in the dark regions, and the average and RMS + values will be distorted by the denser sampling.<br> + <br> + The <b>-v</b> flag prints out extra information during the + checking. A + value greater than 1 will print the color values of each test point.<br> + <br> + The <b>-l</b> flag allows setting a total ink limit (TAC) for + printing + devices. If a device has a total ink limit, and hasn't been + characterised with device values above this limit, then plotting the + gamut in these areas will almost certainly be misleading. The ink + limit + will be in final calibrated device values if the profile includes + calibration information.<br> + <br> + The <b>-L</b> flag allows setting a black channel ink limit for + printing + devices. If a device has a black ink limit, and hasn't been + characterised with device values above this limit, then plotting the + gamut in these areas will almost certainly be misleading. The black + ink + limit + will be final calibrated device values if the profile + includes calibration information.<br> + <br> + The default device grid is relativy low, and 11 (ie. 11 x 11 x 11 + for + an RGB device, 11 x 11 x 11 x 11 for a CMYK device etc.).<br> + <br> + The <span style="font-weight: bold;">-h</span> flag selects a + higher + device grid resolution of 27.<br> + <br> + The <span style="font-weight: bold;">-u</span> flag selects an + extremely high device grid resolution of 61. This will probably take + a + long time to run.<br> + <br> + The <span style="font-weight: bold;">-G res</span> option allows a + specific grid resolution to be used.<br> + <br> + If the <b>-I</b> option is used, then the grid is in L*a*b* space, + so out of gamut clipping behavior can be examined. Delta E's will be + high due to the clipping.<br> + <br> + The <b>-c</b> option causes the error differences to be + displayed + in CIE94 delta E, rather than plain L*a*b* delta E. CIE94 delta E + has a + closer + correspondence with perceived color differences than the default + CIE76 + delta E values.<br> + <br> + The <b>-k</b> option causes the error differences to be + displayed + in CIEDE2000 delta E, rather than plain L*a*b* delta E. CIEDE2000 + delta + E has a + closer + correspondence with perceived color differences than either CIE76 or + CIE94 delta E values.<br> + <br> + The <b>-w</b> creates a <a href="File_Formats.html#X3DOM">X3DOM</a> + 3D + visualization + of the differences between the test points and the profiles + prediction + of + the resulting colors.<br> + <br> + The <b>-x</b> flag adds Lab axes to the X3DOM output.<br> + <br> + The <span style="font-weight: bold;">-e</span> flag causes the + error + vectors in the X3DOM output to be color coded according to their + lengths, from longest to shortest: yellow, red, magenta, blue, cyan + and + green.<br> + <br> + <br> + <br> + </body> </html> |