Abstract: Stereo-footprint is a sort of vital trace evidence during the criminal detection. Thus making a higher accuracy feature extraction of the stereo-footprint is becoming more important. A smart system of stereo-footprint characteristics information collection-recognition is designed based on the relative verification theory. In the system, feature extraction is completed through CP35MHT80 which offered by wenglor, image extraction is gotten through C920 which is offered by Logitech and the software sections such as image acquisition, coordinate transformation, peripherals ranging module, and feature data processing etc. are completed through Labview, then the feature data matching are completed. At last, as the results show the system can make a speed stereo-footprint feature extraction and recognize the footprint. After that, a high quality stereo-footprint recognition report will show up.

Key words: stereo-footprint, feature extraction, trace examination, footprint recognition

摘要： 立体足迹是刑侦过程中的重要痕迹证据，对立体足迹进行准确的特征数据提取至关重要。依据相应痕迹检验学理论设计出立体足迹特征数据自动采集识别系统。基于Logitech公司C920摄像头完成图像采集，采用wenglor公司CP35MHT80激光测距仪提取特征数据，通过Labview实现图像处理、坐标换算、外围测距模块的控制及特征数据处理等操作，最后完成特征数据匹配。实验结果表明，该系统能快速地提取立体足迹特征数据，并得出准确的立体足迹特征识别报告。

关键词: 立体足迹, 特征提取, 痕迹检验, 足迹识别