This article describes a process for converting color RGB (Red/Green/Blue) images to LMS (Long/Medium/Short) photoreceptor activations. In an RGB image each triple represents phosphor luminosity in a CRT (Cathode Ray Tube) screen. In an LMS triple each value simulates a retina photoreceptor activation upon viewing the RGB triple displayed on a CRT screen. The conversion process requires the phosphor emission functions for a CRT monitor and the sensitivity functions for the Long, Medium, and Short cone photoreceptors. To calculate the final photoreceptor activity, transform the RGB pixels with the CRT emission function, then multiply the result with the photoreceptor sensitivity vector.

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Technical Report, Department of Computer Sciences, The University of Texas at Austin, 2006. Technical Report 06-49.

@techreport{depaula:utcstr06-49, title={Converting RGB Images to LMS Cone Activations}, author={Judah B. De Paula}, institution={Department of Computer Sciences, The University of Texas at Austin}, note={Technical Report 06-49}, url="http://nn.cs.utexas.edu/?depaula:utcstr06-49", year={2006} }