Effective fuzzy logic approach to image enhancement
Zhiwei Zhao, Xueqin Li, Heng-Da Cheng · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1993
This paper presents a fuzzy enhancement algorithm for image enhancement based on a fuzzy membership function and a contrast intensification transformation function using the average fuzzy membership grade with neighbors. Our algorithm has the following features: (1) fully employs the information of neighbors and utilizes the two-step nonlinear transformations, (2) reduces noise by using a smoothing operator in fuzzy singletons, and (3) keeps the edges intact.