This is the command pfscolortransform that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
pfscolortransform - Apply color calibration using user provided matrix file.
SYNOPSIS
pfscolortransform (--xyzrgb matrix-file | --rgbxyz matrix-file) [--transpose]
DESCRIPTION
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]
OPTIONS
--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.
EXAMPLES
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.
Use pfscolortransform online using onworks.net services
