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《Journal of Data Acquisition & Processing》 2001-01
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An Algorithm for Color Image Region Segmentation and Vectorization Based on Contour Tracing in Anticlockwise Order

Qian Xiaofeng College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics & Astronautics Nanjing 210016,P.R.China Yan Wei Department of Computer Science,Huaihai Institute of Technology Lianyungang 222005,P.R.China  
An algorithm for color image segmentation based on contour tracing in anticlockwise order is presented. In the process of contour tracing, contour lines are gained by tracing in anticlockwise order and a method of backdate search which ensures the correctness of the algorithm is used for contour tracing at those pixels where other contour pixels can not be continuously traced. By analysis of the neighbouring pixels, this paper avoids judging those pixels that no need to be compared again. Region segmentation proceeds by recursion method based on contour tracing. The extraction of contours with a certain color value directly is very practical, which is one of the advantages of this algorithm. A method of extracting contour vectors is also presented from the tactic property of the pixels of a line. The method results in reducing contour pixels numbers that need to be stored, saving memory and farther image processing, such as shape matching, coding, etc. Experimental results show the validity of the algorithm.
【CateGory Index】: TP391.4
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