Optoelectronic processing based on binary decompositions of images

Morphological and rank-order filtering can be performed by combining linear operations and thresholding. In this review we present several approaches for the optoelectronic implementation of these operations. The systems based on this architectures are able to deal with realistic size images at high frame rates. Additionally, the same concepts are applied to nonlinear correlators based on thresholding and linear correlation. The main features, owing to the nonlinearity of the process, are the higher discrimination and the selectivity to target intensity, with independence of the global image intensity.

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