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中南大学学报(自然科学版)

Journal of Central South University

第47卷    第4期    总第260期    2016年4月

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文章编号:1672-7207(2016)04-1181-07
立体足迹激光定量检验系统的设计与实现
潘楠1,彭进1,伍星1,刘益2,迟子铖3

(1. 昆明理工大学 机电工程学院,云南 昆明,650500;
2. 昆明信诺莱伯科技有限公司,云南 昆明,650228;
3. 昆明理工大学 信息工程与自动化学院,云南 昆明,650500
)

摘 要: 针对公安机关办案人员通过现场遗留立体足迹快速缩小嫌疑人范围、明确案件侦察方向的需求,基于LabVIEW平台,结合激光测距传感器、计算机控制和图像技术设计开发出一套立体足迹激光定量检验系统。规避传统拍照要求较高、三维扫描成本高昂、数据文件较大等问题,更快速地搜索出与待检测信号最为相似的样本数据,从而实现立体足迹特征参数的无损提取、精确计算和自适应匹配。详细介绍该系统的设计思路及图像采集、特征参数提取、检验对比分析等关键技术的具体实现方式。研究结果表明:该系统能有效应用于犯罪现场的立体足迹分析检验。

 

关键字: LabVIEW;图像采集;激光测距;立体足迹分析

Design and implementation of 3D footprint laser quantitative testing system
PAN Nan1, PENG Jin1, WU Xing1, LIU Yi2, CHI Zicheng3

1. School of Mechanical and Electrical Engineering,
Kunming University of Science and Technology, Kunming 650500, China;
2. Kunming SNLAB Tech Co. Ltd., Kunming 650228, China;
3. Faculty of Information Engineering and Automation,
Kunming University of Science and Technology, Kunming 650500, China

Abstract:In view of the needs of police investigators to quickly narrow the scope of the suspect and clear the direction of investigation by using the footprint left from the scene, a 3D footprint laser quantitative testing system was designed and developed based on LabVIEW, which combined the laser ranging sensor, computer control and image technology. Circumvent the issues like high demanding of traditional photography, costly 3D scanning and large data files, and the sample data most similar to the signal to be detected would be searched out more quickly, so that the non-destructive extraction, accurate calculation and adaptive matching of 3D footprint’s characteristic parameter were realized. The system design concept and concrete implementation of the key technologies such as image mosaic, characteristics extraction and comparative analysis were all introduced in detail. The results show that the system can be applied to the 3D footprint analysis in crime scene effectively.

 

Key words: LabVIEW; image mosaic; laser ranging; 3D footprint analysis

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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