An adaptive brightness preserving bi-histogram equalization
Hongying Shen, Shuifa Sun, Bangjun Lei, Sheng Zheng · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2011
Based on mean preserving bi-histogram equalization (BBHE), an adaptive image histogram equalization algorithm for contrast enhancement is proposed. The threshold is gotten with adaptive iterative steps and used to divide the original image into two sub-images. The proposed Iterative of Brightness Bi-Histogram Equalization overcomes the over-enhancement phenomenon in the conventional histogram equalization. The simulation results show that the algorithm can not only preserve the mean brightness, but also keep the enhancement image information effectively from visual perception, and get a better edge detection result.