If we could make use of the technology of computer seeing and realize automatic recognition of identifying id card numbers , we should greatly improve the efficiency of id card administration . presently , most recognition systems of id card numbers are based on scanner , but this systems cannot meet the demand of long and real time catching image . this text lucubrates theoretic about image manipulation and pattern recognition and sets up a integrated regnition system of identifying id card numbers . on ccd vedic . concretery consist : ( 1 ) firstly investigating the segmentation about image of illumination asymmetry . due to a dotal lamp - house , the illumination of id card numbers image is asymmetrical 本文应用了图像处理和模式识别技术，建立了基于摄像头的身份证号码的识别系统。主要研究内容具体包括如下： ( 1 )研究了亮度不均匀的身份证号码图像的分割。由于采用点光源进行局部照射，导致身份证号码图像的亮度不均匀，因此直接对图像采用全局阈值进行分割不能有效地分离号码体。
