Image enhancement based on gamma map processing
Chen‐Yu Tseng, Sheng‐Jyh Wang, Yi‐An Chen · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2010
This paper proposes a novel image enhancement technique based on Gamma Map Processing (GMP). In this approach, a base gamma map is directly generated according to the intensity image. After that, a sequence of gamma map processing is performed to generate a channel-wise gamma map. Mapping through the estimated gamma, image details, colorfulness, and sharpness of the original image are automatically improved. Besides, the dynamic range of the images can be virtually expanded.