| IP视频通信中的错误掩盖技术 |
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| 引用本文： | 梁柱,王兆华,罗忠.IP视频通信中的错误掩盖技术[J].信号处理,2001,17(6):538-542. |
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| 作者姓名： | 梁柱 王兆华 罗忠 |
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| 作者单位： | 1. 深圳华为技术有限公司中研多媒体,深圳,518057
2. 天津大学电信学院,天津,300072 |
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| 基金项目： | 本项目为与华为公司合作项目 |
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| 摘 要： | 当视频压缩数据在QoS(Quality of Service)不能保障的IP网络(如INTERNET)上传输时,必须考虑信道所引入错误的影响,错误掩盖是消除错误的重要方法.本文建议了一种能够保持图像边缘的空域错误掩盖算法,该算法适用于基于块的视频压缩编码标准,如MPEG 2、H.263等.该算法根据受损宏块邻近区域的边缘信息自适应地确定用于内插的像素的权值,实验证明该算法能够很好地保持边缘的连续性,达到了较好的图像掩盖效果.
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| 关 键 词： | 错误掩盖 图像重建 边缘检测 |
Error Concealment for IP Video Communication |
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| LIANG Zhu,Wang Zhaohua,Luo hong.Error Concealment for IP Video Communication[J].Signal Processing,2001,17(6):538-542. |
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| Authors: | LIANG Zhu Wang Zhaohua Luo hong |
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| Institution: | Liang Zhu 1,Wang Zhaohua 2,Luo Zhong 3 |
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| Abstract: | When transmitting video data over IP network without guarantee QoS, we have to consider the effect introduced by channel error. Error concealment is a kind of important method to eliminate the worse effect. In this paper, we propose a spatial concealment algorithm that can preserve the edge continuity of the image. This algorithm can be used in block-based video compress standard, such as MPEG 2,H.263.The algorithm can adaptively adjust the weights of the pixel according to the edge information of the adjacent area of the corrupted MB. The result of simulation shows that the algorithm can preserve the edge continuity very well and can acquire acceptable image quality. |
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| Keywords: | Error concealment Image reconstruct Edge detection |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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