Advanced High Dynamic Range Imaging, 2nd Edition

B

Practical Color Spaces

This appendix briefly describes some color space conversion formulas that are typically used for converting between color spaces. These can be used in both an LDR and HDR imaging context. All these color space conversions are implemented in the HDR Toolbox and their MATLAB implementations may be found in the folder ColorSpaces.

CIE L ⋆ a ⋆ b ⋆ or CIE LAB) is a device-independent color space, which was introduced by the CIE to meet the requirement of having a color space that is perceptually uniform. CIE L ⋆ a ⋆ b ⋆ is based upon CIE X Y Z and is another attempt to linearize the perceptibility of unit vector color differences. The L ⋆ component represents the lightness of a color and has values ...