High reality video system using a super high-definition display and perceptually optimized coding

Very high-resolution video systems, such as 4K (4096×2160), enable a very close viewing distance that is almost the same as the picture height. This technology enables high-reality systems in homes to be realized. However, the very short distance causes significantly different views across the picture, and uniform processing for the picture may not always be the best choice. Here, we calculate the actual view size of a pixel, which depends on the pixel position in close viewing. We propose perceptual coding methods using pre(post)-processing for the picture to be coded. The bit rate reduction is checked for each method, including contrast conversion, pre-filtering, and geometric image conversion. The 4K resolution processing is realized by four patterns of HDTV picture coding with H.264 and HEVC. As the results of these experiments, there is the possibility of a bit rate reduction of 5 to 25 percent on H.264 and 10 to 30 percent on HEVC.