| 基于降低分辨率模型视频代码转换的研究 |
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| 引用本文： | 李晓辉.基于降低分辨率模型视频代码转换的研究[J].应用科学学报,2001,19(2):127-130. |
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| 作者姓名： | 李晓辉 |
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| 作者单位： | 安徽大学电子工程与信息科学系计算智能与信息处理教育部重点实验室, 安徽合肥 230039 |
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| 基金项目： | 安徽省自然科学基金资助项目(99043124) |
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| 摘 要： | 基于降低分辨率的视频代码转换模型,对运动矢量和宏块类型进行了精简.提出一种基于量化误差的自适应运动矢量模型,从而减小了搜索域,使最佳化输出运动矢量能进行快速运动估值.该方法在视频图象质量没有明显失真的前提下,改善了计算复杂度.
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| 关 键 词： | 代码转换 视频 降低分辨率 自适应 运动估值 |
| 文章编号： | 0255-8297(2001)02-0127-04 |
| 收稿时间： | 2000-01-31 |
| 修稿时间： | 2000-08-15 |
Video Transcoding Based on
the Model of Resolution Reduction |
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| LI Xiao-hui.Video Transcoding Based on
the Model of Resolution Reduction[J].Journal of Applied Sciences,2001,19(2):127-130. |
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| Authors: | LI Xiao-hui |
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| Institution: | The Key Laboratory of Intelligent Computing and Signal Processing, Ministry of Education, Department of Electronic Engineering and Information Science, Anhui University, Hefei 230039, China |
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| Abstract: | The motion vectors and macroblock type during video transcoding based on resolution reduction are refined in this paper. A model of adaptive motion vectors is proposed based on the sum of the differential quantization errors, thus to reduced the search area. It is possible to achieve fast motion estimation for near optimal outgoing motion vectors. This method may improve the computational complexity without significant losing in quality. |
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| Keywords: | transcoding video resolution reduction adaptive motion estimation |
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