High Dynamic Range Image Compression with Improved Logarithmic Transformation

High Dynamic Range Image Compression with Improved Logarithmic Transformation
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DOI：
10.1587/comex.2016xbl0148
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发表时间：
2017
期刊：
Collection of Frontiers of Architectural Research
影响因子：
--
通讯作者：
Masahide Sumizawa;Xi Zhang
Masahide Sumizawa;Xi Zhang
中科院分区：
其他
文献类型：
--
作者：
Masahide Sumizawa;Xi Zhang

文献摘要

相似文献

高动态范围（High Dynamic Range，HDR）图像已经发展到与人眼几乎相同的动态范围，但是巨大的数据量带来了存储和传输的问题。为了压缩HDR图像，文献[4]提出了一种利用对数变换的高效编码方法。在这封信中，我们改进了对数变换，然后推导出最佳参数，以最大限度地减少HDR区域的编码误差。实验证明，改进后的编码方法在HDR区域的编码误差小于现有的其他方法。
: 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 e ffi cient 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 con fi rmed that the improved coding method has less coding error in HDR region than other existing methods.