Improved Faster R-CNN Based Surface Defect Detection Algorithm for Plates

Table 2

Number of partially defective images.

Defect type	Training set		Test set
	Number of targets/image/images		Number of targets/image number of images
Rough shavings	816	432	206	128
Watermark	776	526	201	146
Sand marks	803	569	293	132
Sundries	796	567	196	125
Gum spot	626	461	243	130