diff options
Diffstat (limited to 'xicc/specplot.c')
| -rwxr-xr-x[-rw-r--r--] | xicc/specplot.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/xicc/specplot.c b/xicc/specplot.c index 9e43856..de819ed 100644..100755 --- a/xicc/specplot.c +++ b/xicc/specplot.c @@ -21,6 +21,7 @@ #include <stdio.h> #include <math.h> +#include "cgats.h" #include "xspect.h" #include "numlib.h" #include "plot.h" @@ -112,10 +113,17 @@ static int do_spec( || mt == inst_mrt_emission_flash || mt == inst_mrt_ambient_flash) { - /* Compute XYZ of illuminant */ - if (icx_ill_sp2XYZ(xyz, icxOT_CIE_1931_2, NULL, icxIT_custom, 0, &tsp) != 0) + /* Compute absolute XYZ of illuminant */ + if (icx_ill_sp2XYZ(xyz, icxOT_CIE_1931_2, NULL, icxIT_custom, 0, &tsp, 1) != 0) warning("icx_ill_sp2XYZ returned error"); + printf("Abs. Y = %f\n", xyz[1]); + + /* Normalise to Y = 1 */ + xyz[0] /= xyz[1]; + xyz[2] /= xyz[1]; + xyz[1] /= xyz[1]; + icmXYZ2Yxy(Yxy, xyz); icmXYZ2Lab(&icmD50, Lab, xyz); |