Adaptive contrast enhancement by a Gaussian function of local standard deviation
Feng Zhang, Dazong Jiang · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001
In this paper, we present an adaptive contrast enhancement (ACE) method in which the contrast gain is determined by mapping the local standard deviation (LSD) histogram of an image to a Gaussian distribution function. The contrast gain is nonlinearly adjusted to avoid noise overenhancement and ringing artifacts while improving the detail contrast with less computational loading. The effectiveness of our method is demonstrated with radiological images.