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《JOURNAL OF TEST AND MEASUREMENT TECHNOLOGY》 2001-01
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A Method for Accurately Extracting the Contour Parameters

SUN Fu-ming, GUI Zhi-guo, HAN Yan (Dept. of Electronic Engineering and Information Science, North China Institute of Technology, Taiyuan 030051, China)  
Aim\ To present a method used in extracting contour parameters accurately under the object shape known. Methods\ Median filter and expectation of first-order derivative algorithms are used. Results\ The parameters of contour are extracted accurately. Conclusion\ The result shows that this method can remove the noise and the big flecks effectively in the gray-image and provide subpixel precision. It can be easily used for real time detection.
【CateGory Index】: TP274
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