IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
High dynamic range image compression with improved logarithmic transformation
Masahide SumizawaXi Zhang
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2017 Volume 6 Issue 1 Pages 17-21


High dynamic range (HDR) images have been developed to have almost the same dynamic range as human eye, but the huge amount of data brings a problem in storage and transmission. To compress HDR images, an efficient coding method using logarithmic transformation had been proposed in [4]. In this letter, we improve the logarithmic transformation and then derive the optimal parameter to minimize the coding error in HDR region. It is experimentally confirmed that the improved coding method has less coding error in HDR region than other existing methods.

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© 2017 The Institute of Electronics, Information and Communication Engineers
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