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Lu, M.; Chen, C.-L. Detection and Classification of Bearing Surface Defects Based on Machine Vision. Appl. Sci. 2021, 11, 1825. https://doi.org/10.3390/app11041825

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Lu, M., & Chen, C. -L. (2021). Detection and Classification of Bearing Surface Defects Based on Machine Vision. Applied Sciences, 11(4), 1825. https://doi.org/10.3390/app11041825

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Lu, M.; Chen, C.-L. Detection and Classification of Bearing Surface Defects Based on Machine Vision. Appl. Sci. 2021, 11, 1825. https://doi.org/10.3390/app11041825

Abstract: Surface defects on bearings can directly affect the service life and reduce the performance of equipment. At present, the detection of bearing surface defects is mostly done manually, which is labor-intensive and results in poor stability. To improve the inspection speed and the defect recognition rate, we proposed a bearing surface defect detection and classification method using machine vision technology. The method makes two main contributions. It proposes a local multi-neural network (Lc-MNN) image segmentation algorithm with the wavelet transform as the classification feature. The precision segmentation of the defect image is accomplished in three steps: wavelet feature extraction, Lc-MNN region division, and Lc-MNN classification. It also proposes a feature selection algorithm (SCV) that makes comprehensive use of scalar feature selection, correlation analysis, and vector feature selection to first remove similar features through correlation analysis, further screen the results with a scalar feature selection algorithm, and finally select the classification features using a feature vector selection algorithm. Using 600 test samples with three types of defect in the experiment, an identification rate of 99.5% was achieved without the need for large-scale calculation. The comparison tests indicated that the proposed method can achieve efficient feature selection and defect classification. Keywords: computer monitoring and production control; bearing surface inspection; feature selection; defect classification; the use of artificial intelligence in industry

Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers.

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Lu M, Chen C-L. Detection and Classification of Bearing Surface Defects Based on Machine Vision. Applied Sciences. 2021; 11(4):1825. https://doi.org/10.3390/app11041825

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