文献类型：会议论文

英文题名：Retinex-based Color Correction for Displaying High Dynamic Range Images

作者：Wang, Jinhua[1];Bi, Haijiang[2]

第一作者：王金华

通讯作者：Wang, JH[1]

机构：[1]Beijing Union Univ, Inst Informat Technol, Beijing, Peoples R China;[2]Datang Software Technol Co Ltd, Beijing, Peoples R China

第一机构：北京联合大学智慧城市学院

通讯机构：[1]corresponding author), Beijing Union Univ, Inst Informat Technol, Beijing, Peoples R China.|[1141734]北京联合大学智慧城市学院;[11417]北京联合大学;

会议论文集：IEEE 10th International Conference on Signal Processing

会议日期：OCT 24-28, 2010

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：color correction; tone mapping; contrast enhancement; high dynamic range; Ratinex

摘要：Until now, most of methods for High Dynamic Range (HDR) images locus on tone mapping. They can compress large range luminance values so that they can be displayed on ordinary devices. However, the lighting condition in which the images are taken is not considered. As a result, the mapped images may have color cast. Therefore, to get an image that is similar to direct observation of a scene for human eyes, tone mapping alone for a HDR image is not sufficient. In order to solve the problem, we propose an Orientation-based Retinex (O_Retinex) method serving as color correction for HDR images. On the other hand, local contrast loss may be caused by most tone mapping methods when the dynamic range of a HDR image is quite high. In our paper, a, contrast enhancement technique is proposed to solve the problem. Furthermore, the color correction and the tone mapping are processed in parallel for our method, which is the main difference from other methods that serve the tone mapping as a preprocessing Because the proposed method uses the parallel processing strategy, it can adopt most of tone mapping methods. The only constraint on them is that the ratios among three color channels must be preserved. Experiments show that the proposed method can efficiently reduce color cast induced by lighting condition for HDR images.