Ultra High Fidelity Deep Image Decompression With l∞-Constrained Compression

We propose a novel asymmetric image compression system of light l_∞ -constrained predictive encoding and heavy-duty CNN-based soft decoding. The system achieves superior rate-distortion performances over the best of existing image compression methods, including BPG, WebP, FLIF and recent CNN codecs, in both l₂ and l_∞ error metrics, for bit rates near or above the threshold of perceptually transparent reconstruction. These remarkable coding gains …