| 一种基于边缘判决的空域差错掩盖算法 |
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| 引用本文： | 詹学峰,朱秀昌.一种基于边缘判决的空域差错掩盖算法[J].南京邮电学院学报(自然科学版),2009(2):26-30. |
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| 作者姓名： | 詹学峰 朱秀昌 |
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| 作者单位： | 南京邮电大学通信与信息工程学院,江苏南京210003 |
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| 基金项目： | 国家自然科学基金（60672134）、南京邮电大学青蓝计划（NY207077）资助项目 |
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| 摘 要： | 提出了一种基于边缘判决的解码视频空域差错掩盖算法。该算法首先对丢失块邻域中的像素进行边缘检测，并对检测出的边缘判断其是否会穿过丢失块。然后使用方向选择过程提取多个候选插值方向，并通过边界像素灰度差决定最终插值方向。实验结果表明本算法有效地提高了错误图像的掩盖效果。
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| 关 键 词： | 视频传输 差错掩盖 边缘判决 方向插值 |
Spatial Error Concealment Based on Judgement on Edge Information |
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| ZHAN Xue-feng,ZHU Xiu-chang.Spatial Error Concealment Based on Judgement on Edge Information[J].Journal of Nanjing University of Posts and Telecommunications(Natural Science),2009(2):26-30. |
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| Authors: | ZHAN Xue-feng ZHU Xiu-chang |
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| Affiliation: | ( College of Telecommunications ＆ Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003,China) |
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| Abstract: | An efficient spatial error concealment algorithm is proposed for corrupted image by transmission losses in this work. Firstly, information of edges in the neighboring blocks is extracted by judging which edges may traverse the loss block. Then, all detected edges are divided into relevant and irrelevant edges. Subsequently, one or more directions for interpolation can be selected from the relevant edge set by minimizing the boundary pixel difference for each direction. Experimental results demonstrate the better performanee of the proposed methods as comoared to orevious techniques. |
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| Keywords: | video transmission error concealment edge judgement directional interpolation |
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