Method of color image processing to eliminate shadows and reflections

A method for processing an original color image, the method comprising the following steps:

• a computer for performing the steps of:
• (a) converting the original color image into an intermediate image made of pixels, each pixel having components that depend solely on hue H and saturation S components of the pixels in the original color image in an HSV or HLS representation;
• wherein the intermediate image is made of pixels, each pixel comprising two components X and Y, determined by functions of the H component, theses functions take the same value when the H component is zero or equal to one;
• (b) generating a new monochromatic image from the intermediate image, said new monochromatic image being made of pixels, each pixel having only one component which is a function of the components of the corresponding pixel in the intermediate image;
• wherein the new monochromatic image is generated by projecting the components of the pixels of the intermediate image in a plane in which a dynamic range or mean standard deviation is the greatest.