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从多尺度边缘检测的角度分析得出：在一定尺度下，圆形缺陷在两个方向上都看作是屋脊边缘，而条形缺陷只在一个方向上被看作是屋脊边缘。
From multiscale edges detection, the conclusion is drawn that in certain scale, circular defect is considered as crest edge in two directions, and bar defect in one direction.
具有方向可调节性的边缘检测器的设计问题。
本文提出了一种多方向模糊形态学边缘检测算法。
This paper introduces a multi -directions algorithm for image edge detection based on fuzzy mathematical morphology.
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