소성∙가공 (Transactions of Materials Processing)
- 제7권6호
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- Pages.575-585
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- 1998
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- 1225-696X(pISSN)
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- 2287-6359(eISSN)
화상처리법을 이용한 곡면변형률 측정 시스템의 개발
Development of a Surface-Strain Measurement System Using the Image Processing Technique
- 발행 : 1998.12.01
초록
An automated surface-strain measuring system using the image processing technique is developed in the present study which consists of the hardware to capture and to display digital images. and the software to calculate the 3-D informations of grid points from two views. New or improved algorithms for the mapping and establishing correspondence of grid points and elements the camera calibration and the subpixel measurement of grid points are implemented. As an application of the present system the surface-strains of deformed blanks in the limitting dome height test the square cup deep-drawing and punch stretching to obtain the forming limit diagram are measured. The results are com-pared with those obtained by conventional manual methods.
키워드