摘要
An automatic quality inspection system,aiming to identify potential product defects,is essential for the production of solar cells. But few papers focus on the detection of back electrodes in solar cells,for which a complete algorithm is proposed to segment back electrodes and check for defects on them. Firstly,coarse and fine positions of electrodes are obtained using the edge intensity projection and template matching method. Secondly,the edge of electrodes is extracted by the threshold method and seed growing method. Thirdly,an edge-to-region method is adopted to generate a closed region with edge points. Finally,a method is designed to judge whether there are defects in electrodes or not. To verify the performance of the proposed method,an experiment is carried out. From the experiment result,the proposed segmentation method for electrodes outperforms the four famous methods implemented in the experiment. ? 2022 Journal of Zhongshan University.
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