Active Bayesian color constancy with non-uniform sensors

The human impression of the color of an object is the same when viewed foveally or peripherally, despite the non-uniformity of the spatial distribution of photoreceptors on the retina. We propose that this nonuniformity can be used to attain color constancy, the perception of a constant surface color under varying illumination. We develop a multi-sensor Bayesian technique that solves for the surface reflectance and lighting parameters of a bilinear model by sequentially acquiring measurements from independent sensors. We present two cases: (i) two sets of sensors, each with different spectral sensitivities, (ii) a continuous variation in the spectral sensitivities across the sensor array.