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首页> 外文期刊>International journal of digital multimedia broadcasting >An Optimized Dynamic Scene Change Detection Algorithm for H.264/AVC Encoded Video Sequences
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An Optimized Dynamic Scene Change Detection Algorithm for H.264/AVC Encoded Video Sequences

机译：H.264 / AVC编码视频序列的动态场景变化优化检测算法

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摘要

Scene change detection plays an important role in a number of video applications, including video indexing, semantic features extraction, and, in general, pre- and post-processing operations. This paper deals with the design and performance evaluation of a dynamic scene change detector optimized for H.264/AVC encoded video sequences. The detector is based on a dynamic threshold that adaptively tracks different features of the video sequence, to increase the whole scheme accuracy in correctly locating true scene changes. The solution has been tested on suitable video sequences resembling real-world videos thanks to a number of different motion features, and has provided good performance without requiring an increase in decoder complexity. This is a valuable issue, considering the possible application of the proposed algorithm in post-processing operations, such as error concealment for video decoding in typical error prone video transmission environments, such as wireless networks.
机译：场景变化检测在许多视频应用程序中起着重要作用，包括视频索引，语义特征提取以及通常的预处理和后处理操作。本文研究了针对H.264 / AVC编码视频序列而优化的动态场景变化检测器的设计和性能评估。该检测器基于动态阈值，该阈值可自适应地跟踪视频序列的不同特征，从而在正确定位真实场景变化时提高整体方案的准确性。由于具有许多不同的运动功能，该解决方案已经在类似于真实视频的合适视频序列上进行了测试，并在不增加解码器复杂性的情况下提供了良好的性能。考虑到所提出算法在后处理操作中的可能应用，例如在无线网络等典型易错视频传输环境中用于视频解码的错误隐藏，这是一个有价值的问题。

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