Compression techniques for active video content

Proceedings DCC 2002. Data Compression Conference Pub Date : 2002-04-02 DOI:10.1109/DCC.2002.1000009

A. Neogi, T. Chiueh

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引用次数: 3

Abstract

Summary for only given. Conventional digital video playback systems provide only limited user interactivity, mostly in the form of VCR-like controls. In this model, the temporal ordering and the spatial viewpoints of the video streams being viewed are completely determined at authoring time. In contrast, we have defined a form of interactive video called active video (see http://www.ecsl.cs.sunysb.edu//spl sim/anindya/avs/avs.html, 2002), which supports hyper-linking among related video sequences and interpolation of video sequences with neighboring viewpoints, to offer end users the additional flexibility of choosing the sequencing and the viewing angle (even virtual ones) at playback time. However, active video has a substantially higher storage and transmission cost due to multiple time-synchronized video streams capturing the dynamic scene and the pixel-level correspondence maps encoding the spatial association among the frame-pairs of all adjacent streams. The maps are interpolated at run-time to generate virtual views. We describe and evaluate the following three compression techniques that alleviate the storage and network transmission costs of active video: spatial video compression; lossy map compression; lossless map compression.

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活动视频内容的压缩技术

摘要仅供参考。传统的数字视频回放系统只提供有限的用户交互性，主要是类似录像机的控制形式。在该模型中，视频流的时间顺序和空间视点在创作时完全确定。相比之下，我们定义了一种称为主动视频的交互式视频形式(见http://www.ecsl.cs.sunysb.edu//spl sim/anindya/avs/avs.html, 2002)，它支持相关视频序列之间的超链接和视频序列与邻近视点的插值，为最终用户提供在播放时选择顺序和视角(甚至虚拟角度)的额外灵活性。然而，由于多个时间同步视频流捕获动态场景，并且像素级对应映射编码了所有相邻流的帧对之间的空间关联，因此有源视频具有更高的存储和传输成本。在运行时插入映射以生成虚拟视图。我们描述并评估了以下三种压缩技术，以减轻活动视频的存储和网络传输成本:空间视频压缩;有损映射压缩;无损映射压缩。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings DCC 2002. Data Compression Conference

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