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| 基于SD2PCM的数字减影图象序列无损压缩算法 | |
| 引用本文： | 纪震,牟轩沁,蔡元龙,蒋大宗.基于SD2PCM的数字减影图象序列无损压缩算法[J].中国生物医学工程学报,2002,21(1):69-73. |
| 作者姓名： | 纪震 牟轩沁 蔡元龙 蒋大宗 |
| 作者单位： | 1. 深圳大学信息工程学院,深圳,518060 2. 西安交通大学图象所,西安,710049 3. 西安交通大学生物医学研究所,西安,710049 |
| 基金项目： | 国家“8 63计划”资助目 (863 3 0 6 0 6 0 6) |
| 摘 要： | DPCM编码在无损压缩中已被广泛应用 ,本文充分利用DSA图象序列在减影图象 (一阶差分 )之间仍然存在一定的相关性条件下 ,进一步推广了DPCM编码方式到高阶形式 ,提出了一种基于减影差异图象的DPCM(SD2 PCM )的编码方式 ,有效地去除了图象在空间以及时间上的冗余度。理论与实验的证明都证明了 ,SD2 PCM的压缩效率要优于目前的 3D DPCM。 |
| 关 键 词： | DSA 序列图象压缩 无损压缩 DPCM SD2PCM |
| 文章编号： | 0258-8021(2002)-01-069-05 |
| 修稿时间： | 1998年5月18日 |
LOSSLESS COMPRESSION OF DSA IMAGE SEQUENCE BASED ON SD2PCM CODER |
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| JI Zhen ,MOU Xuan qin ,CAI Yuan long.LOSSLESS COMPRESSION OF DSA IMAGE SEQUENCE BASED ON SD2PCM CODER[J].Chinese Journal of Biomedical Engineering,2002,21(1):69-73. | |
| Authors: | JI Zhen MOU Xuan qin CAI Yuan long |
| Institution: | JI Zhen 1,MOU Xuan qin 2,CAI Yuan long 2 |
| Abstract: | A novel SD 2PCM compression technique was developed for lossless compression of DSA (Digital Subtraction Angiography) image sequence, in which the correlation between subtraction images remained meaningful. By extending the lossless DPCM coder to high order, it constituted a Subtraction Differential DPCM (SD 2PCM) coding scheme with the time as variable. This proposed method was able to sufficiently reduce the temporal and the spatial correlation. It was proved that compression efficiency of SD 2PCM was higher than 3D DPCM theoretically and experimentally. |
| Keywords: | DSA Image sequence compression Lossless compression Differential pulse code modulation (DPCM) Subtraction differential 2pulse code modulation (SD 2PCM) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |