L2 Norm Optimization of Tone Mapping for Two Layer Lossless Coding of HDR Images

被引：0
|
作者：
Iwahashi, Masahiro [1 ]
Yoshida, Taichi [1 ]
Kiya, Hitoshi [2 ]
机构：
[1] Nagaoka Univ Technol, Dept Elect Engn, Nagaoka, Niigata, Japan
[2] Tokyo Metropolitan Univ, Dept Informat & Commun Syst, Hino, Tokyo, Japan
来源：
2014 ASIA-PACIFIC SIGNAL AND INFORMATION PROCESSING ASSOCIATION ANNUAL SUMMIT AND CONFERENCE (APSIPA) | 2014年
关键词：
COMPRESSION;
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper optimizes a tone mapping function in a backward compatible lossless coding of high dynamic range (HDR) images. The mapping function is designed so that it maximizes quality of decoded low dynamic range (LDR) images. An optimization procedure for a lossy coding system is extended to a lossless system under the condition that a user can specify arbitrary tone mapping function to produce an LDR image from the original HDR image. Superiority of the proposed method on the rate distortion curves of the LDR image was confirmed to be up to 7.5 dB in PSNR improvement for an image sample.
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页数：4
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