pfscolortransform - Apply color calibration using user provided matrix file.

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                                                                                            pfscolortransform(1)

       Use this command to calibrate colours using a calibration matrix supplied in a text file.  The command is
       intended  for  linearized  (not  gamma  corrected)  color spaces.  The matrix should be 3x3 and it should
       transform from CIE XYZ to ITU rec. 709 RGB (sRGB primaries but linear, no gamma) or from the same RGB  to
       CIE  XYZ  (see options below). The text file should contain three rows with numbers separated by a comma,
       for example:

              0.0292,0.0126,0.0009
              0.0052,0.0340,-0.0049
              0.0055,-0.0059,0.0409

       If the --xyzrgb is supplied, the pixel values are color-transformed as follows:

              [RGB]' = M * [XYZ]

       where ' is matrix transposition, * is matrix multiplication, RGB is a vector of RGB values and XYZ is the
       vector of CIE XYZ trichromatic values.  If  the  --rgbxyz  is  supplied,  the  pixel  values  are  color-
       transformed as follows:

              [XYZ]' = M * [RGB]

       pfsin memorial.hdr | pfscolortransform -x matrix.txt | pfsout memorial_gc.ppm

              Color calibrate memorial image with matrix in matrix.txt file and save to memorial_gc.ppm.

       pfscolortransform - Apply color calibration using user provided matrix file.

       --xyzrgb matrix-file, -x matrix-file
              User provided matrix is a conversion matrix to convert from XYZ to RGB color space.

       --rgbxyz matrix-file, -r matrix-file
              User provided matrix is a conversion matrix to convert from RGB to XYZ color space.

       --transpose,-t
              Take transpose of provided matrix file.

pfsin(1) pfsout(1) pfsdisplayfunction(1)

pfscolortransform (--xyzrgb matrix-file | --rgbxyz matrix-file) [--transpose]