Video Decomposition Method Used in Multi-format Transmission System for Remote Production

摘要

High definition television (HDTV/2K) and ultrahigh definition television (UHDTV-1/4K, UHDTV-2/8K) live program production which use internet protocol (IP) have been increased. In addition, taking advantage of IP technology, remote production which produce live program at a broadcast station by connecting venues and the broadcast station via an IP network is in developing, also the devices for remote production is in developing. Separate devices, each dedicated to transmitting 2K, 4K, or 8K video, are needed for remote production; however, recent live program production uses 2K, 4K, and 8K video at the same time, resulting in an increasingly complex system. In this paper, the authors propose a multi-format transmission system that enables efficient remote production without the need for dedicated devices. The proposed method decomposes 4K and 8K videos into 2K in order to treat 2K/4K/8K video signals as a unified format. The authors report the simulation results of image quality evaluations using the video decomposition method and lightweight compression, and the authors evaluate the processing delay of video decomposition.