Abstract
Foreign body recognition of locomotive roof is an important security link. In this paper, a foreign body recognition method is presented based on shape feature matching. Roof images of the inherent devices (without foreign bodies) and those of the running train are processed respectively with the cubic B-spline wavelet edge detection to get multi-scale edge images and segment objects. And thus the invariant moments of each closed area in the edge images are extracted. Then, after calculating the similarity measure by Euclidean distance, we can judge whether the objects are foreign bodies. Test results show that this method can effectively recognize a foreign body in the size of 33mm×33mm.
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