| 重建误差最优化的运动捕获数据关键帧提取 |
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| 引用本文： | 刘云根,刘金刚.重建误差最优化的运动捕获数据关键帧提取[J].计算机辅助设计与图形学学报,2010,22(4). |
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| 作者姓名： | 刘云根 刘金刚 |
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| 作者单位： | 1. 中国科学院计算技术研究所,北京,100190;中国科学院研究生院,北京,100049
2. 中国科学院计算技术研究所,北京,100190;首都师范大学计算机科学联合研究院,北京,100037 |
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| 摘 要： | 为了实现运动捕获数据的实时压缩,提出一种重建误差最优化的关键帧提取方法.定义重建误差作为关键帧有效性的度量标准;利用帧消减算法得到各消减帧的重建误差,并根据误差大小对消减帧进行排序;最后以消减帧排序为基础计算出重建误差曲线,并依据曲线确定最优压缩率来提取出相应数量的关键帧.实验结果表明,该方法能够高效地从运动捕获数据中提取出具有最优重建误差的关键帧,较好地满足了数据实时压缩的需要.
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| 关 键 词： | 运动捕获数据 关键帧 重建误差 帧消减 |
Keyframe Extraction from Motion Capture Data by Optimal Reconstruction Error |
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| Affiliation: | Institute of Computing Technology/a>;Chinese Academy of Sciences/a>;Beijing 100190;Graduate University of Chinese Academy of Sciences/a>;Beijing 100049;Joint Faculty of Computer Science/a>;Capital Normal University/a>;Beijing 100037 |
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| Abstract: | In order to compress motion capture data in real-time,a method is proposed to extract the keyframes with an optimal reconstruction error.By the method,firstly the reconstruction error is defined to evaluate the availability of keyframe.Then a frame decimation algorithm is used to compute the reconstruction error for each decimation frame and sorted into a queue according to the error value.A reconstruction error curve is figured out through the queue and an optimal compression rate is derived from the curve... |
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| Keywords: | motion capture data keyframe reconstruction error frame decimation |
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