REAL-TIME IMPLEMENTATION OF UHDTV VIDEO CODING SYSTEM WITH SUPERRE-SOLUTION TECHNIQUES

We have developed a prototype real-time UHDTV video coding system based on our proposed reconstructive video coding paradigm. In the paradigm, an image reduction process before a conventional lossy encoder suppresses non-linear distortions such as blocking artifacts alleviating the compression ratio at the encoder. On the receiver side, the super-resolution-based reconstruction process recovers the resolution of the decoded image by restoring and/or substituting the folded/omitted over-Nyquist components in the reduction. The paradigm is capable of transmitting side data that optimally controls the reconstruction process by trying the reconstruction in advance on the transmission side. The paper focuses on the hardware implementation of the reduction and super-resolution processes on FPGA-based 4K video processing PCI Express cards. We achieved real-time high-quality transmission of UHDTV video at a compression ratio of around 500:1.