BabelColor ®
Color Measurement and Analysis
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CT&A RGB vs RGB

custom RGB space 

A custom RGB space can be defined by specifying the illuminant coordinates, the red, green and blue primaries, and the gamma function. You can export your custom RGB space as an ICC profile. This profile can be assigned to an image using image editing programs that support profile embedding, such as Photoshop. It can also be assigned to a color list in BabelColor's PatchTool or used to convert a color list with PatchTool's Gamut Tools. You can also export all the custom data as well as the XYZ-to-RGB and RGB-to-XYZ matrices coefficients to a spreadsheet. A D-series or blackbody illuminant can be defined simply by entering the source temperature, in kelvin. Gamma can be defined by a single parameter or a two segment function with a slope for the linear portion, a transition, an offset, and a gamma value. The screenshot below contains the gamma parameters of the  eciRGB_v2  space, also called L*, i.e. L-star. The L* tone response curve can, in effect, be exactly defined by the same equation used for the sRGB and NTSC spaces just by changing the parameters' value.
BabelColor ®

CT&A RGB vs RGB

custom RGB space 

A custom RGB space can be defined by specifying the illuminant coordinates, the red, green and blue primaries, and the gamma function. You can export your custom RGB space as an ICC profile. This profile can be assigned to an image using image editing programs that support profile embedding, such as Photoshop. It can also be assigned to a color list in BabelColor's PatchTool or used to convert a color list with PatchTool's Gamut Tools. You can also export all the custom data as well as the XYZ-to-RGB and RGB-to- XYZ matrices coefficients to a spreadsheet. A D-series or blackbody illuminant can be defined simply by entering the source temperature, in kelvin. Gamma can be defined by a single parameter or a two segment function with a slope for the linear portion, a transition, an offset, and a gamma value. The screenshot below contains the gamma parameters of the  eciRGB_v2 space, also called L*, i.e. L-star. The L* tone response curve can, in effect, be exactly defined by the same equation used for the sRGB and NTSC spaces just by changing the parameters' value.
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