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

随着高清视频设备的普及，以及互联网领域数字广播系统和视频门户服务的进步，大量的高清视频演示已经可以在日常生活中使用。这些情况增强了人们以新的方式享受这些视频内容的愿望。本文提出了一种新的多视觉视频提供系统的建议，该系统使众多用户能够以任何所需的分辨率交互地访问任何视域。其基础是预先存储基于局部区域(瓦片)的预编码视频流。这些多个流被动态地结合在一起，并基于用户的视域位置来传送。本文详细介绍了一种基于H.264/AVC瓦片的视频编码和一种快速瓦片流拼接方案。仿真实验和我们的实际实现证明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.