RGBtoLab.zip

Convert images in RGB format to CIELab format with different reference illuminant tristimulus values

Contains two m files:
1) RGBtoXYZ
Convert an image from RGB color space to XYZ color space.
Input image can be either as 3 channels, i.e. a 3D array or individual channels, i.e. THREE 1D arrays.
RGB channels can have common range [0 255] or standard range [0 1].
Two RGB/XYZ Matrices for D65 and D50 Illuminant spectral.
2) XYZtoLab
Convert an image with XYZ format to CIELab format in different illuminant.
Input XYZ image can be either as 3 channels, i.e. a 3D array or individual channels, i.e. THREE 1D arrays.
Reference illuminant tristimulus values for:
A, B, C, D50, D55, D65, D75, E, F2, F7, F11