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首页> 外文会议>International Conference on Emerging Technology Trends in Electronics, Communication and Networking >Hybrid spatio-temporal error concealment technique for image/video transmission
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Hybrid spatio-temporal error concealment technique for image/video transmission

机译：图像/视频传输混合时空误差隐藏技术

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摘要

Compressed bit streams are, in general, very sensitive to erroneous channel. Compressed image or video transport over error prone wireless channels may results in loss or erroneous decoding and due to that bit stream may cause severe degradation on picture quality. Various error control coding techniques like, error resilience, forward error control coding and error concealment are used to control the error. This paper proposes hybrid error concealment technique. In spatial domain three methods weighted average interpolation (WAI), Directional interpolation (DI) and transformed based concealment (TBC) are implemented and compared for various noises. For video, one more temporal concealment is implemented based on motion vector. To reduce the computational complexity and better quality, we proposed a new hybrid spatio-temporal video error concealment technique with mode selection based on boundary matching decision. It performs well compare to spatial and temporal methods separately and provides satisfactory results over a large set of conditional channels, where significant information loss is present.
机译：通常对错误信道非常敏感的压缩比特流。压缩图像或视频传输易于易于无线通道可能导致丢失或错误的解码，并且由于该比特流可能导致图像质量严重降级。各种错误控制编码技术（如，错误弹性，前向错误控制编码和错误隐藏）用于控制错误。本文提出了混合误差隐藏技术。在空间域中三种方法加权平均插值（WAI），方向插值（DI）和基于转换的隐藏（TBC），并比较各种噪声。对于视频，基于运动矢量实现了一种更为时间隐藏。为降低计算复杂性和更好的质量，我们提出了一种基于边界匹配决策的模式选择的新的混合时空视频误差隐藏技术。它可以单独进行与空间和时间方法进行比较，并在大量条件通道上提供令人满意的结果，其中存在显着的信息丢失。

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