Compatible Color Adjustment for Preserving Chromatic Adapted Color in HDR Image Rendering

Seok-Min CHAE  Sung-Hak LEE  Kyu-Ik SOHNG  

IEICE TRANSACTIONS on Electronics   Vol.E96-C   No.11   pp.1408-1412
Publication Date: 2013/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.1408
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
iCAM06,  HDR image,  tone compression,  white point shift,  color distortion,  color adjustment,  

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The iCAM06 has been used as an image appearance model for HDR image rendering. iCAM06 goes through the color space conversions of the several steps to present HDR images. The dynamic range of a HDR image needs to be mapped onto the range of output devices, which is called the tone mapping. However, tone compression process of iCAM06 causes white point shift and color distortion because of color-clipping and cross-stimulus. Therefore, we proposed a modified white-balanced method in low-chromatic region and a color adjustment method in IPT space to compensate the color distortion during in tone compression process. Through the experimental results, we confirmed the proposed compatible color adjustment method had better performance than iCAM06 and enhanced models.