3 results about "Defect region" patented technology

The invention discloses a lithium battery coating defect detection method, comprising the following steps: images of a pole piece of a lithium battery are collected; a target image is obtained by splicing the images of the pole piece, and the battery cycle of the lithium battery pole piece is determined; within the range of a battery cycle, a defect region is obtained by extracting defects from the target image; and the eigenvalue of the defect region is calculated, the defect region is classified and matched according to the eigenvalue, and the type of the defect region is determined. The method has low resource utilization rate and high recognition rate. The defect on the pole piece of a lithium battery can be accurately detected, and the defect region can be accurately located and matched.

The invention discloses an automatic laser repairing method for surface microdefects of a large-diameter fused quartz optical element, relates to the technical field of engineering optics, and aims to solve the problems of low automation degree and low efficiency of an existing repairing method. The method is technically characterized by comprising the following steps: determining a repair strategy according to position information and size information of a surface defect area of an element; and according to the repairing strategy, repairing the defect area on the surface of the element by using a laser repairing device. Furthermore, the minimum distance allowed by repairing the pits is used as a distance threshold value, the crosslinking degree between the defect areas is judged, a multi-defect repairing strategy is adopted for the defect area with the large crosslinking degree, and a single-defect repairing strategy is adopted for the defect area with the small crosslinking degree. According to the method, the processes of repairing strategy making, repairing file generating, corresponding parameter laser outputting and the like are all automated, a large amount of time is saved, and the operation error rate is greatly reduced. The method can be applied to automatic repair of element surface defects.