保持局部对比度的动态范围压缩算法

doi:10.12066/j.issn.1007-2861.1722

上海大学学报(自然科学版) ›› 2017, Vol. 23 ›› Issue (5): 682-689.doi: 10.12066/j.issn.1007-2861.1722

保持局部对比度的动态范围压缩算法

燕明¹, 胡越黎¹, 胡云生²

1. 上海大学上海市电站自动化技术重点实验室, 上海 200072;
2. 上海大学微电子研究与开发中心, 上海 200072

收稿日期:2015-12-09 出版日期:2017-10-30 发布日期:2017-10-30
通讯作者: 胡越黎(1959—), 男, 教授, 博士生导师, 博士, 研究方向为微电子与集成电路设计、汽车电子与系统集成、机器视觉与片上多处理系统架构. E-mail: huyueli@shu.edu.cn
作者简介:胡越黎(1959—), 男, 教授, 博士生导师, 博士, 研究方向为微电子与集成电路设计、汽车电子与系统集成、机器视觉与片上多处理系统架构. E-mail: huyueli@shu.edu.cn

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

摘要/Abstract

摘要：

针对高动态范围图像在显示时不能突出部分细节的缺点, 提出了一种保持局部对比度的动态范围压缩算法, 解决了传统算法在动态范围压缩时会降低局部对比度和影响高亮区域的缺陷, 提出了新的S形亮度转换曲线, 即通过控制S形亮度映射曲线的强度来提高图像低照度和增强强光区域的显示效果. 实验结果表明, 该算法可以有效压缩动态范围, 使图像拥有较好的视觉效果.

关键词: 局部对比度, 亮度映射曲线, 动态范围压缩

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

燕明1, 胡越黎1, 胡云生2. 保持局部对比度的动态范围压缩算法[J]. 上海大学学报(自然科学版), 2017, 23(5): 682-689.

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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保持局部对比度的动态范围压缩算法

Dynamic range compression with local contrast preservation

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