Cameras and image-editing software often process images in the wide-gamut
ProPhoto color space, encompassing 90% of all visible colors. However, when
images are encoded for sharing, this color-rich representation is transformed
and clipped to fit within the small-gamut standard RGB (sRGB) color space,
representing only 30% of visible colors. Recovering the l
提出了一种基于 latent space 学习的,对 raw images 进行压缩的新框架,包括了对于图像的不对称和混合空间特征分辨率设计、context model 的新设计和 sRGB 导向的自适应量化策略设计,并且提供了一种新的单模型可实现不同比特率的策略。实验结果表明,该方法在较小的 metadata size 情况下能够获得更好的重构质量。