Looking for histograms on the power supply of an artificial retina

Collecting global information from a large number of computing elements is a challenge in computing structures encountered within monochip parallel architectures. In this paper we point out that examining the current drawn from the power supply can provide valuable information in such structures. The examples shown here in the area of artificial retinas aim at extracting results from pre- processed images as well as the histogram of the actual image while it is acquired.