Two-stage fuzzy logic architecture for grey-scale image processing

Fuzzy logic is an important representational form of grey-scale morphology. In this paper, we introduce a two-stage fuzzy logic architecture for grey-scale image processing. This architecture is simple, and is suitable for optical implementation because of its simple connection and no feedback. In addition, we also give the fuzzy logic representations of some basic grey-scale morphological image operations. The fuzzy logic representations have two forms: SP (sum of product) form and PS (product of sum) form, so the proposed architecture can also have two different forms. A simple optoelectronic experiment is implemented, and it is the same as a digital simulation.