A detail enhancement and dynamic range adjustment algorithm for high dynamic range images

Bo Xu; Huachuang Wang; Mingtao Liang; Cong Yu; Jinlong Hu; Hua Cheng

doi:10.1117/12.2068556

6 August 2014 A detail enhancement and dynamic range adjustment algorithm for high dynamic range images

Bo Xu, Huachuang Wang, Mingtao Liang, Cong Yu, Jinlong Hu, Hua Cheng

Proceedings Volume 9281, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 92811C (2014) https://doi.org/10.1117/12.2068556
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

Although high dynamic range (HDR) images contain large amounts of information, they have weak texture and low contrast. What's more, these images are difficult to be reproduced on low dynamic range displaying mediums. If much more information is to be acquired when these images are displayed on PCs, some specific transforms, such as compressing the dynamic range, enhancing the portions of little difference in original contrast and highlighting the texture details on the premise of keeping the parts of large contrast, are needed. To this ends, a multi-scale guided filter enhancement algorithm which derives from the single-scale guided filter based on the analysis of non-physical model is proposed in this paper. Firstly, this algorithm decomposes the original HDR images into base image and detail images of different scales, and then it adaptively selects a transform function which acts on the enhanced detail images and original images. By comparing the treatment effects of HDR images and low dynamic range (LDR) images of different scene features, it proves that this algorithm, on the basis of maintaining the hierarchy and texture details of images, not only improves the contrast and enhances the details of images, but also adjusts the dynamic range well. Thus, it is much suitable for human observation or analytical processing of machines.

Citation Download Citation

Bo Xu, Huachuang Wang, Mingtao Liang, Cong Yu, Jinlong Hu, and Hua Cheng "A detail enhancement and dynamic range adjustment algorithm for high dynamic range images", Proc. SPIE 9281, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 92811C (6 August 2014); https://doi.org/10.1117/12.2068556

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