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In this paper, the artificial neural network (ANN) method is proposed in magnetic optic image (MOI) test. In the MOI test, it uses the rotation polarized light to detect the magnetic field which is induced by the crack. In the specimen, the magnetic field distribution depends on the shape of the crack. In the detection, the influences of the magnetic domain spots make it difficult to identify the...
In this paper, we propose a new method, based on a graph searching technique, for microcrack extraction from scanning electron microscopic images of rocks. This method mainly focuses on how to detect the crack and extract it, and then quantify some basic geometrical features. The crack can be detected automatically with the aid of two endpoints of the crack. The algorithm involves the following process:...
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