保持局部对比度的动态范围压缩算法

doi:10.12066/j.issn.1007-2861.1722

Journal of Shanghai University（Natural Science Edition） ›› 2017, Vol. 23 ›› Issue (5): 682-689.doi: 10.12066/j.issn.1007-2861.1722

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Dynamic range compression with local contrast preservation

YAN Ming¹, HU Yuelⁱ¹, HU Yunsheng²

1. Shanghai Key Laboratory of Power Station Automation Technology, Shanghai University, Shanghai 200072, China;
2. Microelectronic Research and Development Center, Shanghai University, Shanghai 200072, China

Received:2015-12-09 Online:2017-10-30 Published:2017-10-30

Abstract

Abstract:

As partial detail in a high dynamic range image cannot be shown on a common display, a dynamic range compression algorithm with local contrast preservation is presented. This paper addresses the problem that ordinary algorithms reduce local contrast and damage highlighted regions, and proposes a new S shaped luminance mapping curve. Luminance is successfully enhanced by controlling intensity of the curve. Experimental results show that the algorithm can effectively compress the image dynamic range with good visual effect.

Key words: local contrast, luminance mapping curve, dynamic range compression

YAN Ming1, HU Yueli1, HU Yunsheng2. Dynamic range compression with local contrast preservation[J]. Journal of Shanghai University（Natural Science Edition）, 2017, 23(5): 682-689.

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Dynamic range compression with local contrast preservation

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