IMAGE PROCESSING TECHNIQUES IN ANALYSIS OF METAL FRACTURE SURFACE

Acta Metall Sin

1996, Vol. 32

Issue (5): 552-556 DOI:

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IMAGE PROCESSING TECHNIQUES IN ANALYSIS OF METAL FRACTURE SURFACE

YAN Yunhui;WANG Dejun(Northeastern University; Shenyang 110006)(Manuscript received 1995-08-21)

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YAN Yunhui;WANG Dejun(Northeastern University; Shenyang 110006)(Manuscript received 1995-08-21). IMAGE PROCESSING TECHNIQUES IN ANALYSIS OF METAL FRACTURE SURFACE. Acta Metall Sin, 1996, 32(5): 552-556.

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Abstract On the base of establishment of a computer aided instrumentation and analysis system for analyzing metallic fracture surface, some methods in analysis of fracture surface, by means of computer graphics and image processing techniques for detecting of edges and corresponding points, are described in detail. A way based on the method of weighted least squares for measuring and calculating the sizes of fatigue slip band and fatigue striation spacing is presented. An improved Levine's algorithm of detecting a pair of corresponding points is proposed according to the principle of measuring distance from stereo vision , which is used in measuring the relative depth on metallic fracture surface so that the precision and efficiency of computations are all improved.

Key words: metallic fracture surface image processing computer aided instrumentation

Received: 18 May 1996

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1996/V32/I5/552

1颜云辉,鹫见新一．机械工程学报,1995;31(5):292徐建华．图像处理与分析．北京:科学出版社,1992:3173LevineMD,O'HandleyDA,YagiGM． ComputGraphicsImageProcess,1973;2:134

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