Abstract
We propose a novel JPEG XT image compression with hue compensation for two-layer HDR coding. LDR images produced from JPEG XT bitstreams have some distortion in hue due to tone mapping operations. In order to suppress the color distortion, we apply a novel hue compensation method based on the maximally saturated colors. Moreover, the bitstreams generated by using the proposed method are fully compatible with the JPEG XT standard. In an experiment, the proposed method is demonstrated not only to produce images with small hue degradation but also to maintain well-mapped luminance, in terms of three kinds of criterion: TMQI, hue value in CIEDE2000, and the maximally saturated color on the constant-hue plane.
Abstract (translated)
提出了一种基于色调补偿的两层HDR图像压缩算法。由jpeg xt位流生成的ldr图像由于色调映射操作而产生色调失真。为了抑制色彩失真，提出了一种基于最大饱和色彩的色调补偿方法。此外，使用该方法生成的比特流与jpeg-xt标准完全兼容。通过实验，证明了该方法不仅能产生色调衰减小的图像，而且能保持良好的映射亮度，其标准有三种：tmqi、ciede2000中的色调值和恒定色调平面上的最大饱和色。
URL
https://arxiv.org/abs/1904.11315
