Fig. 1. Schematic diagram of polarizer imaging experiment system

Fig. 2. Structured light imaging enhancement effect (left, uniform light; right, structured light)

Fig. 3. Overall framework of proposed model

Fig. 4. Anti anomaly detection network model based on encoding and decoding structure

Fig. 5. Anomaly detection process based on synthetic defects

Fig. 6. Real defect examples. (a) Point defect; (b) foreign matter; (c) bubbles; (d) crease

Fig. 7. Examples of composite defects

Fig. 8. Hyperparametric selection diagram of model loss weight

Fig. 9. Relationship between number of training samples and model accuracy

Fig. 10. Comparison of reconstruction results of some normal samples

Fig. 11. Comparison of reconstruction effect of defect samples

Fig. 12. Abnormal score graph of 100 normal samples and 100 defective samples

Fig. 13. Precision-recall curve of various methods

Fig. 14. Interference dataset images