The effectiveness of color similarity measures in background-frame differencing applications is examined in this paper. Twelve published color similarity measures are investigated in RGB sensor space and CIE
Michael Hild, "On the Effectiveness of Color Similarity Measures in Background–Frame Differencing Applications" in Proc. IS&T CGIV 2002 First European Conf. on Colour in Graphics, Imaging, and Vision, 2002, pp 304 - 309, https://doi.org/10.2352/CGIV.2002.1.1.art00065