Free View-Area Access to Super High-Vidion Video for Multiple Users

随着高清晰度视频设备的普及，以及随着数字广播系统和互联网域中的视频门户服务的发展，在日常生活中已经可以获得许多高清晰度视频呈现。这些情况加强了人们以新的方式享受那些视频内容的愿望。本文提出了一种新的多视觉视频供应系统，使众多用户访问，交互式，任何视图区域与任何所需的分辨率的建议。其基础是预先存储基于部分区域（区块）的预编码视频流。这些多个流被动态地加入，并基于用户的观看区域位置被递送。本文详细介绍了H.264/AVC基于瓦片的视频编码和快速瓦片流加入方案。仿真实验和实际实现验证了该方案的可行性和有效性。

With the spread of high-definition video devices, and with the advance of digital broadcasting systems and video portal services in the Internet domains, numerous high-definition video presentations have become available in everyday life. These circumstances strengthen the desire of people to enjoy those video contents in new ways. This paper presents a proposal of a new multivision video provisioning system that enables numerous users to access, interactively, any view area with any desired resolution. The basis is that the partial area (tile)-based pre-coded video streams are stored in advance. These multiple streams are joined dynamically and delivered based on the user's view-area position. This paper details a H.264/AVC tile-based video coding and a fast tile stream joiner scheme. Simulation experiments and our practical implementation demonstrate the feasibility and effectiveness of our proposal.