Improving Iterative Retinex Algorithm for Dynamic Range Compression
In this paper,the itsrative Retinex algorithm is improved to handle dynamic range compression problems.Based on the analysis of the McCann-Sobel algorithm,the iterative smoothing operation can be interpreted as an asymmetric diffusion.In order to characterized the sharp discontinuities in illumination,an edge-stopping function is introduced into the iterative procedure,whieh is inspired by anisotropic diffusion.Using the improved illumination estimator,dynamie range of images can be arbitrarily manipulated while suppressing undesirable artifacts.Experiments show that the proposed algorithms outperforms several derivatives for dynamic range compression based on the iterative Retinex.
iterative Retinex algorithm anisotropic diffusion dynamic range compression
Shengdong Pan Xiangjing An Hongtao Xue Hangen He
College of Mechatronics Engineering and Automation National University of Defense Technology Changsha, Hunan, China
国际会议
太原
英文
922-925
2012-12-08（万方平台首次上网日期，不代表论文的发表时间）