ステレオマッチング法の改善によるSEM3次元破面解析(<特集>フラクトグラフィ)

概要

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Three-dimensional analysis of fracture surface by SEM (Scanning Electron Microscope) is inevitable to clarify the cause of fracture. It is effective to analyze with stereo matching. However, conventional template matching method to measure 3-dimensional profile of fracture surface usually employs fixed template size and has deficiencies such as mismatching and much processing time. In this paper, we develop a new stereo matching algorithm, which can save processing time and assure accuracy. In this new template matching method, template size is varied to assure accuracy and lessen mismatching points. When calculating the correlation coefficient of image template pixels to search the matching templates, we don't use all the pixels but choose one pixel every 2 or 3 pixels to save processing time. In order to investigate the precision and the usefulness of the proposed method, two examples of reconstructing fracture surfaces are successfully shown. It is practically realized to measure three-dimensional profile of fracture surface in personal computer.
社団法人日本材料学会の論文
2001-11-15