画像処理によるヘアライン仕上面の欠陥検出方法 : 機械要素,潤滑,工作,生産管理など

概要

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It is useful to systemize the visual inspecting processes carried by skilled workers for finished surfaces. For that purpose, the hairline finished surfaces were inspected based on the extracted features of them. For the first step of estimating the hairline finished surfaces, the scratch which had been left on the hairline pattern owing to inadequate finishing was first detected. Two-dimensional discrete Fourier transform was applied for estimating the hairline images obtained by the CCD camera. As a result, it was found that there appears characterized spatial frequency distribution In the spacing frequency area, when there was a scratch in the hairline. Moreover, the position and size of scratch in the hairline image were recognized. By applying this method in various cases, the effectiveness of this method was confirmed.
社団法人日本機械学会の論文
2001-05-25