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《Journal of Computer Applications》 2008-08
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Canny edge detection algorithm based on anisotropic diffusion equations

ZHANG Jie , TAN Jie-qing(1.College of Computer and Information, Hefei University of Technology, Hefei Anhui 230009, China;2. Institute of Applied Mathematics, Hefei University of Technology, Hefei Anhui 230009, China)  
The Canny edge detection algorithm which used Gaussian filter for smoothing the image may lead to lower SNR and higher edge location error, which produced false edge and corner roundness. To solve these problems, an improved edge detection algorithm was proposed by replacing Gaussian filter with anisotropic diffusion equations, and the image enhancement was carried out after diffusion. Experimental results show that the accuracy of edge detection is improved evidently, and a much better edge detection effect is obtained.
【Fund】: 国家自然科学基金资助项目(60773043;60473114);; 安徽省自然科学基金资助项目(070416273X);; 安徽省教育厅科技创新团队基金资助项目(2005TD03)
【CateGory Index】: TP391.41
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