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《Journal of Guangdong University of Technology》 2002-01
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The Orientation and Segmentation Technologies in Palmprint-Based Identification Systems

DAI Qing yun 1, YU Ying lin 2, ZHANG Da peng 3 (1.School of Info.Eng of GDUT,Guangzhou,510643,China; 2. College of Comm & Elect of SCUT,Guangzhou,510640,China; 3. HongKong Polytechnic University,Kowloon,Hongkong)  
The purposes of orientating palmprint images are to set up a coordinate system to normalize the palmprint images,to reduce the nonlinear interference of rotation,translation and distortion caused in the capture process,and to improve the recognition rate.According to the characteristics of online palmprint images,in this paper,the contour lines are traced out by gray morphological grads,and then,the key points are extracted out by the ratio of the palm's area to the background's area in a circle centered at contour lines.Experiments show that the methods are feasible.
【CateGory Index】: TP391.41
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