Iterative picture restoration using video optical feedback

Abstract TV optical feedback methods have been used so far for spatial filtering, for solving partial differential equations, as operational amplifiers and as flip-flop arrays. Here we propose to use TV optical feedback as an analog computer that performs iterative algorithms on picture inputs. An investigation of the most suitable algorithms is presented with the corresponding hybrid setups. Then simulations on a computer are performed in order to compare the quality of iterative restoration methods with more classical Wiener filtering.

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