| HDR视频映射算法研究 |
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| 引用本文： | 侯志龙,徐遥令,黄哲.HDR视频映射算法研究[J].电视技术,2017,41(6). |
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| 作者姓名： | 侯志龙 徐遥令 黄哲 |
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| 作者单位： | 深圳创维-RGB电子有限公司研发总部,广东深圳,518108 |
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| 基金项目： | 国家科技重大专项(核高基) |
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| 摘 要： | 基于对传统伽马指数函数、及最新Dolby PQ函数的深入研究和分析,针对采用Dolby PQ函数编码的HDR视频节目内容,提出直接将编码亮度在范围内的视频图像像素映射至电视机屏幕进行保真显示、而采用亮度压缩方式将其他高亮和低亮视频图像像素映射至电视机屏幕进行显示的HDR视频映射算法;试验证明能够将HDR视频源内PQ函数编码的像素亮度映射至电视机屏幕显示亮度的动态范围之内,保证视频源图像内容能够较真实的在电视机屏幕上显示,避免了HDR视频图像显示时出现内容丢失;以及算法且易于实现、能够快速进行商业应用.
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| 关 键 词： | 伽马函数 Dolby PQ 高动态范围 映射算法 |
Research for tone mapping algorithm of HDR video |
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| HOU Zhilong,XU Yaoling,HUANG Zhe.Research for tone mapping algorithm of HDR video[J].Tv Engineering,2017,41(6). |
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| Authors: | HOU Zhilong XU Yaoling HUANG Zhe |
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| Abstract: | A tone mapping algorithm for HDR Video encoded by Dolby PQ function is proposed based on the research of the traditional GAMMA function and the recent Dolby PQ function.By this algorithm,the video pixels with the encoding luminance in the range of 1 ～p · CMAXPwill be mapped directly to display on the TV's panel,and other pixels after their luminance must be compressed will also be mapped to display on the TV's panel.Facts prove:each pixel of HDR video would be mapped to the luminance range of the TV's panel,and the HDR video image rendered on the TV's panel would be relatively real and complete.The algorithm is also easy to implement and can be used quickly in commercial applications. |
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| Keywords: | GAMMA Dolby PQ HDR Tone Mapping algorithm |
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