mu-Law Based HDR Coding and Its Error Analysis

作者：Jinno Takao^*; Kaida Hironori; Xue Xinwei; Adami Nicola; Okuda Masahiro

来源：IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences, 2011, E94A(3): 972-978.

DOI：10.1587/transfun.E94.A.972

• HDRI
• coding
• tone mapping model

In this paper, we propose a coding algorithm for High Dynamic Range Images (HDRI). Our encoder applies a tone mapping model based on scaled mu-Law encoding, followed by a conventional Low Dynamic Range Image (LDRI) encoder. The tone mapping model is designed to minimize the difference between the tone-mapped HDRI and its LDR version. By virtue of the nature of the mu-Law model, not only the quality of the HDRI but also the one of the LDRI is improved, compared with a state of the art in conventional HDRI coding methods. Furthermore the error limit caused by our encoding is theoretically analyzed.

• 出版日期2011-3