The photo detector matrix (1) contains a large number of photo detector cells (2) that receive a projected image (3). The photo detectors are coupled to a control circuit (4) that delivers control signals (Ul). A network (5) receives the generated output currents of the detectors. The detectors are of a metal solid state device type with a sensitivity that spans from negative to positive dependent upon the control input. The processing circuit can be configured as a simple neural network that controls the sensitivity of the detectors and provides high frame rates. ADVANTAGE - High speed processing with continuous control of sensitivity.
Optical scanning and processing of image data from photo detectors - has outputs coupled to sensitivity controlling neural network arranged in matrix