| 视频帧组与其残差帧组交替的3D-DWT-SPIHT压缩编码方法研究 |
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| 引用本文： | 胡佳,丁文奇,张立明,胡波.视频帧组与其残差帧组交替的3D-DWT-SPIHT压缩编码方法研究[J].红外与毫米波学报,2004,23(4):265-270. |
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| 作者姓名： | 胡佳 丁文奇 张立明 胡波 |
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| 作者单位： | 复旦大学,电子工程系,上海,200433 |
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| 基金项目： | “8 63”高技术计划基金资助项目 ( 2 0 0 2AA742 0 5 1) |
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| 摘 要： | 提出一种改进的方法，它采用视频帧组与残差帧组交替来进行三维小波变换，减少视频帧组内的帧数、时间延迟和存储空间，同时在时间轴上采用两种小波基相结合的方法，提高了压缩效率和解码图像的质量；尤其是对背景复杂的视频序列有较好的效果．实验结果表明本文方法在相同条件下比现有方法的PSNR平均提高约1dB，在内存减小近一半时仍有所提高．
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| 关 键 词： | 三维小波变换 三维等级树集合划分算法 等级树集合划分算法 视频帧组 残差帧组 |
| 文章编号： | 1001-9014(2004)04-0265-06 |
| 收稿时间： | 2003/9/3 |
| 修稿时间： | 2003年9月3日 |
RESEARCH ON A NOVEL 3D-DWT-SPIHT CODING BY ALTERNATE GROUPS OF ORIGINAL AND RESIDUAL ERROR FRAME |
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| HU Ji,DING Wen-Qi,ZHANG Li-Ming,HU Bo.RESEARCH ON A NOVEL 3D-DWT-SPIHT CODING BY ALTERNATE GROUPS OF ORIGINAL AND RESIDUAL ERROR FRAME[J].Journal of Infrared and Millimeter Waves,2004,23(4):265-270. |
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| Authors: | HU Ji DING Wen-Qi ZHANG Li-Ming HU Bo |
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| Abstract: | An improved method that uses 3D-DWT-SPIHT in original video group and residual error group alternatively was proposed. In addition, the multi-wavelet bases were combined in time domain. The proposed method reduces coding latency time and releases memory requirement, and improves both compression efficiency and reconstructive image's quality, especially to the video sequences with complicated background. Simulation results show that, in the case of equal compression ratio and memory space, our method has higher quality(PSNR above 1dB) than available methods. It is still slightly better than others', when memory is reduced to half. |
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| Keywords: | three dimension wavelet transform(3D-DWT) three dimension set partitioning in Hierarchical tree(3D-SPIHT) the set partitioning in Hierarchical tree for three dimension wavelet transform(3D-DWT-SPIHT) GOF(Group O Frame) group of residual err |
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