The image processing is the conversion of
RGB color units to L* a* b* (segment
labelling) values necessary for graphics
and analysis respectively. To convert the
RGB color space of the image to CIELab
color space is necessary to do it in two
phases. The first phase involves the
conversion from RGB to XYZ (Poynton,
1996) and the second of XYZ color space
CIELab. As a first step it must to
normalize RGB to rgb values (values
between 0 and 1) using equations 1, 2 and
3 for each value of R, G and B
respectively.