Marker Identification of Disc Workpiece Based on HOG-SVM Classifier

Table 2

Character recognition performance.

Test sample	Number of test samples	Correct identification quantity	Recognition accuracy rate (%)
A	20	20	100
E	20	20	100
F	20	18	90
S	20	20	100
T	20	19	95
Letter	100	97	97
1	20	20	100
2	20	20	100
3	20	19	95
5	20	20	100
6	20	19	95
Number	100	98	98