％ function [L, a, b] = RGB2Lab(R, G, B) ％ RGB2Lab takes matrices corresponding to Red, Green, and Blue, and ％ transforms them into CIELab. This transform is based on ITU-R ％ Recommendation BT.709 using the D65 white point reference. ％ The e

Lab2RGB takes L, a, and b double matrices, or an M x N x 3 double image, and returns an image in the RGB color space. Values for L are in the range [0,100] while a* and b* are roughly in the range [-110,110]. If 3 outputs are specified, the