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Research on the Edge Extraction of CT Image

ZHANG Xiaoping,ZHU Zhisong,WANG Junze(Nantong Univirsity,Nantong 226019,China)  
To reconstruct the body organs in 3-D,how to extract the edges from 2-D medical images accurately and effectively has benen the primarily problem.Therefore,a new method of edge extraction was introduced in this paper.The original CT image was binarized firstly and then preprocessed by mathematical morphology operating.Finally,the image edge was extracted by the Canny algorithm.The results of kidney CT image edge extraction show that the method is simple,efficient and superior performance.
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