| 基于分类矢量量化器的超声检测数据压缩方法 |
| |
| 引用本文： | 蔡敏,阙沛文,雷华明,黄作英. 基于分类矢量量化器的超声检测数据压缩方法[J]. 高技术通讯, 2008, 18(6): 630-634. DOI: 10.3772/j.issn.1002-0470.2008.06.014 |
| |
| 作者姓名： | 蔡敏 阙沛文 雷华明 黄作英 |
| |
| 作者单位： | 上海交通大学自动检测研究所,上海,200240;上海交通大学自动检测研究所,上海,200240;上海交通大学自动检测研究所,上海,200240;上海交通大学自动检测研究所,上海,200240 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | 研究了基于分类矢量量化技术的超声数据压缩算法，提出了基于峰值数的超声数据分类方法以及基于峰值距离失真测度的码字搜索算法。本文提出的算法充分利用了超声信号的特征，能够很好地保存超声信号的峰值信息。实验表明，相对于普通矢量量化器，本文提出的分类矢量量化器能够在保持相同压缩比的情况下提高重构信号的信噪比。将此矢量量化器与霍夫曼编码相结合，其压缩比可达1：50，高于基于小波变换的压缩算法。
|
| 关 键 词： | 超声信号 分类矢量量化器 数据压缩 峰值 |
Ultrasonic detecting data compression method based on a classified vector quantizer |
| |
| Cai Min,Que Peiwen,Lei Huaming,Huang Zuoying. Ultrasonic detecting data compression method based on a classified vector quantizer[J]. High Technology Letters, 2008, 18(6): 630-634. DOI: 10.3772/j.issn.1002-0470.2008.06.014 |
| |
| Authors: | Cai Min Que Peiwen Lei Huaming Huang Zuoying |
| |
| Affiliation: | Institute of Automatic Detection;Shanghai Jiaotong University;Shanghai 200240 |
| |
| Abstract: | The research of ultrasonic data compression method based on classified vector quantization was carried out.An ultra- sonic data classified method based on the peak number and a code-searching method based on the peak distance distortion measure were presented.The proposed algorithm in this paper takes the full advantage of the ultrasonic signal's charac- teristic to keep the peak information significantly.Compared to the normal vector quantizer,experimental results showed that this classified vector quantiz... |
| |
| Keywords: | ultrasonic signal classified vector quantizer data compressing peak |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
