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Wireless multimedia utilizing MPEG-4 error resilient tools

机译：利用MPEG-4容错工具的无线多媒体

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Standardized video compression has grown significantly in use for a number of different applications over the last 8 years. Perhaps the best known uses of video compression standards are for videoconferencing and for digital storage media and broadcast. In the case of videoconferencing, the field has been dominated by standards issued by the ITU-T, including H.261 and H.263. In the case of compressed video for storage, playback and broadcast, the ISO standards MPEG-1 and MPEG-2 have dominated. Spurred on by third generation cellular and the promise of wideband wireless connectivity, activity in the area mobile multimedia applications has increased dramatically. Wireless networks present a new challenge for multimedia system designers. This is mainly due to the high sensitivity of these bitstreams to channel errors. Many new video compression tools that address error resilience have been included in the latest voluntary international multimedia standard, MPEG-4. This standard combines both the properties of real-time communications and one-way entertainment applications. Furthermore, MPEG4 includes a number of new tools in the realm of video coding which provide error resilient coding for transmission of video over error prone channels. This paper provides an overview of the video error resilience tools of MPEG-4. Results are provided which demonstrate the performance of these tools when operating in a typical wireless environment.
机译：在过去的8年中，标准化视频压缩在许多不同应用中的使用已显着增长。视频压缩标准的最广为人知的用途也许是用于视频会议以及数字存储媒体和广播。就视频会议而言，该领域已由ITU-T发布的标准（包括H.261和H.263）主导。在用于存储，回放和广播的压缩视频的情况下，ISO标准MPEG-1和MPEG-2占据了主导地位。在第三代蜂窝电话和宽带无线连接的推动下，移动多媒体应用领域的活动急剧增加。无线网络为多媒体系统设计人员提出了新的挑战。这主要是由于这些位流对信道错误的高度敏感性。最新的自愿性国际多媒体标准MPEG-4中已包含许多解决错误恢复的新视频压缩工具。该标准结合了实时通信和单向娱乐应用程序的特性。此外，MPEG4在视频编码领域中包括许多新工具，这些工具为通过易错信道传输视频提供了防错编码。本文概述了MPEG-4的视频错误恢复工具。提供的结果证明了这些工具在典型的无线环境中运行时的性能。

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