| DCT域下采样中的宏块变换算法的研究 |
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| 引用本文： | 汤泉,朱光喜.DCT域下采样中的宏块变换算法的研究[J].武汉科技大学学报(自然科学版),2007,30(4):401-404. |
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| 作者姓名： | 汤泉 朱光喜 |
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| 作者单位： | 华中科技大学电子与信息工程系,湖北,武汉,430074 |
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| 摘 要： | 针对视频转码的下采样过程中，因P帧中包含帧内宏块而需要在多宏块合成中对不同宏块编码方式进行转换的问题，提出一种DCT（Discrete Cosine Transform）域下的可行算法。该算法通过在DCT域下完成对参考帧的部分解码，实现帧内宏块和帧间宏块相互转化，从而高效地解决因下采样过程中多个宏块合成而导致的宏块编码方式冲突问题。
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| 关 键 词： | 转码 DCT域 下采样 宏块变换 |
| 文章编号： | 1672-3090（2007）04-0401-04 |
| 修稿时间： | 2006-11-18 |
Macroblock transform algorithm based on DCT domain video downscale |
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| Tang Quan,Zhu Guangxi.Macroblock transform algorithm based on DCT domain video downscale[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2007,30(4):401-404. |
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| Authors: | Tang Quan Zhu Guangxi |
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| Institution: | Electronic and Information Engineering Department, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | In the video downscale transcoding, it is possible that different macroblock code must be transformed into a single one in order to downscale into a single macroblock. This paper proposes a macroblock transform algorithm based on DCT domain, which decodes the reference frame in the DCT domain and accomplishes the macroblock transform in an efficient manner. The algorithm can solve the macroblock code confliction. |
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| Keywords: | transcoding DCT domain downscale macroblock transform |
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