Research on Extraction of Fan Blade Crack Based on Salient Region Detection
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Abstract
A method based on the combination of the salient region detection and the connected domain detection is proposed in this paper. This method is applied to extract the crack on the blade in the process of the wind turbine blade failure inspection based on digital image processing technology. First, the gray processing and the image enhancement based on the guide filter were used for preprocessing. And then the commonly used processing methods concentrate in the target area was changed into analyzing the characteristics of the background region to remove the background area. Finally, the salient region detection and the connected domain detection were combined to extract the crack area. The test results show that this method can label the cracks from the blade comparatively completely.
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