| 基于水印技术的MPEG-4形状错误隐藏 |
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| 引用本文： | 付炜,丁倩,孟维娜,李刚. 基于水印技术的MPEG-4形状错误隐藏[J]. 现代电子技术, 2007, 30(11): 71-73,76 |
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| 作者姓名： | 付炜 丁倩 孟维娜 李刚 |
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| 作者单位： | 燕山大学,信息科学与工程学院,河北,秦皇岛,066004 |
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| 摘 要： | MPEG-4编码是一种基于对象内容的第二代视频编码方案,将视频根据内容分割成前景对象和背景。视频对象的信息分为形状信息、纹理信息和运动信息,而形状信息是正确解码视频对象的基础。本文就是针对MPEG-4编码标准中的I-VOP的形状信息的错误进行的错误隐藏。采用的方法有别于传统的曲线插值方法和马尔可夫域最大后验估计方法,首次采用基于鲁棒盲水印的算法,主要是将形状信息或变化作为水印信息嵌入到背景对象中。针对前人提出的方法只能修补小部分的损失,本文对于形状信息严重丢失的修复效果很好。
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| 关 键 词： | 二值形状信息 错误隐藏 数字水印 |
| 文章编号： | 1004-373X（2007）11-071-03 |
| 收稿时间： | 2006-10-12 |
| 修稿时间： | 2006-10-12 |
Error Concealment for Shape in MPEG -4 Based on Watermarking |
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| FU Wei,DING Qian,MENG Weina,LI Gang. Error Concealment for Shape in MPEG -4 Based on Watermarking[J]. Modern Electronic Technique, 2007, 30(11): 71-73,76 |
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| Authors: | FU Wei DING Qian MENG Weina LI Gang |
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| Affiliation: | The College of Information Science and Engineering,Yanshan Unversity,Qinhuangdao,066004,China |
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| Abstract: | MPEG-4 is the second generation video coding standard,based on video objects.One video frame is composed of shape information,texture information and motion information.Shape information is the foundation of exact decoding texture data and motion data.In this paper ,a novel error concealment scheme for I-VOP shape information in MPEG-4 object-based video coding,is different from curves interpolation and a maximum a posteriori estimator with a Markov Random Field(MRF),is based on robustious watermarking,shape dates of I-VOP are embedded into Region of Background(ROB).The schemes proposed in the past are used in the cases that have a little lose in the edge lose,but the proposed algorithm get better result for strictness lose. |
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| Keywords: | MPEG-4 |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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