光弾性実験法のしま次数自動割当における雑音処理

概要

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An automatic determination method of fringe order over the whole area of a photoelastic image has not been developed because of the lack of suitable theories and algorithms for processing digitized image data corrupted by noise. In a series of authors' studies on the development of a computer-aided photoelastic system utilizing structure-driven-type image processing, a single-valued function of brightness intensity was constructed on the basis of the concepts of foliation in topology and of transversality in catastrophe theory in order to overcome the difficulty mentioned above. As a result, the reversal of increase/decrease of fringe order along an arbitrarily designated path was discriminated, and a procedure for automatic assignment of fringe order over the whole area of a photoelastic image was successfully established using a tool for monitoring analyzed results in order to facilitate judgment of the reversal of increase/decrease of fringe-order variation.
一般社団法人日本機械学会の論文
1991-07-25