Table 1. Performance of SVM with linear kernel.

Dimension	Precision	Recall	F measure	Accuracy
40 × 36	0.8479	0.8454	0.8467	0.8462
46 × 42	0.8424	0.8424	0.8424	0.8417
54 × 50	0.8498	0.8414	0.8456	0.8457