| 基于相邻像素的帧内预测算法 |
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| 引用本文： | 尹宝才, 孙磊, 孔德慧, 季鹏飞. 基于相邻像素的帧内预测算法[J]. 北京工业大学学报, 2006, 32(11): 1037-1042. |
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| 作者姓名： | 尹宝才 孙磊 孔德慧 季鹏飞 |
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| 作者单位： | 1.北京工业大学 多媒体与智能软件技术北京市重点实验室, 北京 100022 |
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| 基金项目： | 北京市教育委员会科技发展计划重点项目(KZ200310005002)，多媒体与智能软件技术北京市重点实验室资助项目(KP0708200370，KB102-00422)，北京市自然科学基金资助项目(4032006)，北京市教育委员会科技发展计划面上项目(2002KJ001)． |
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| 摘 要： | 为了解决H.264帧内预测中运动物体边缘预测不精确的问题,提出了一种基于块内相邻像素的帧内预测算法.根据块内相邻像素相关性更强的特点,采用层次结构,分阶段预测待编码块内像素.在保证模式方向特性的前提下,充分利用块内已经预测过的像素作为参考,预测其他像素,重新统计最优模式的分布规律,基于统计结果确定该算法的预测模式顺序.实验结果证明,这种基于相邻像素的帧内预测算法可以解决预测不精确的问题,提高帧内编码效率.
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| 关 键 词： | 预测模式 视频编码 H.264标准 帧内预测 |
| 文章编号： | 0254-0037(2006)11-1037-06 |
| 收稿时间： | 2004-11-30 |
| 修稿时间： | 2004-11-30 |
Adjacent Pixels-based Intra Prediction Algorithm |
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| YIN Bao-cai, SUN Lei, KONG De-hui, JI Peng-fei. Adjacent Pixels-based Intra Prediction Algorithm[J]. Journal of Beijing University of Technology, 2006, 32(11): 1037-1042. |
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| Authors: | YIN Bao-cai SUN Lei KONG De-hui JI Peng-fei |
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| Affiliation: | 1.Beijing Municipal Key Lab of Multimedia and Intelligent Software Technology, College of Computer Science and Technology, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | In order to solve the problem which pixels located at the boundary of moving objects can not be pre- dicted accurately in H.264 intra prediction,an adjacent pixels-based intra prediction algorithm is presented in this paper.Because the correlation of pixels in the same block is more closed,some pixels are taken as refer- ences to predict other pixels in the same block.Furthermore,new order of prediction modes is deduced ac- cording to the novel intra prediction algorithm.The test results indicate that,the adjacent pixels-based intra prediction algorithm can solve the problem,which is mentioned above and improve coding efficiency remark- ably. |
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| Keywords: | prediction mode video coding H.264 standard intra prediction |
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