Real-time 6K Image Rescaling with Rate-distortion Optimization
Real-time 6K Image Rescaling with Rate-distortion Optimization
Contemporary image rescaling aims at embedding a high-resolution (HR) image into a low-resolution (LR) thumbnail image that contains embedded information for HR image reconstruction. Unlike traditional image super-resolution, this enables high-fidelity HR image restoration faithful to the original one, given the embedded information in the LR thumbnail. However, state-of-the-art image …