Automatically compensating for color differences from side 1 to side 2 of a document scanning device

A system for compensating for side 1 to side 2 scan head differences in a scanning device capable of scanning a document in a duplex mode, the system comprising:

• a storage device storing a first set of color values acquired by scanning at least one solid area patch using image sensors of a side 1 scan head of said scanning device, said storage device further storing a second set of color values acquired by scanning said same solid area patch using image sensors of a side 2 scan head of said scanning device, said solid area patch having been printed in at least one reference color;
• a processor in communication with said storage device, said processor executing machine readable program instructions for performing:
• retrieving, from said storage device, said first and second sets of color values;
• and
• executing a regression method that generates a matrix of coefficients, wherein multiplying each color value within said second set of color values by said matrix of coefficients minimizes a ΔE color difference metric between said first and second sets of color values;
• a side 1 image processing module associated with said side 1 scan head, said image processing module configured to generate a first set of output color values corresponding to a first image, said first set of output color values comprising pixels within said first image multiplied by an identity matrix;
• and
• a side 2 image processing module associated with said side 2 scan head, said side 2 image processing module configured to generate a second set of output color values corresponding to a second image, said second set of output color values comprising pixels within said second image multiplied by said matrix of coefficients.