Localization of Substation Fittings Based on a Stereo Vision Method
Tao Wang*, Xin Chen**,, Chang Tan**, and Hao Fu**
*State Grid Hubei Electric Power Research Institute
No.175 Xudong Road, Wuhan, Hubei 430074, China
**School of Automation, China University of Geosciences
No.388 Lumo Road, Wuhan, Hubei 430074, China
We propose a novel stereo vision method based on a fast template matching strategy to improve localization accuracy and efficiency of substation fittings. First, considering the salient features of the substation fittings that can be recognized easily, the method searches for features that are similar to the ones in the matching template related to the sub-image of the substation fittings from the global image. When the substation fittings are confirmed, the method repeatedly searches for the one of screw holes in the local region of the substation fittings. It then computes the centering coordinates of the template in the source images until the screw holes are matched. The experimental results show that the proposed template matching method increases the accuracy and efficiency of the substation fitting localization from the global to local search area. Correspondingly, the accuracy and efficiency of stereo vision localization of substation fittings is improved.
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