Table 1.

The distribution of the training and test datasets.

	Transformation	Pixel	Size of training dataset	Size of test dataset
Original images		1440 × 1080	64	20 (Dataset B)
Transformed images	Cropped images with multi-scales	600 × 1000	98	37
		300 × 500	178	78
		240 × 400	243	111
		150 × 250	331	152
		Total	850	378
	Flip transformation	600 × 1000	98
		300 × 500	178
		240 × 400	243
		150 × 250	331
		Total	850
	Noise transformation	600 × 1000	196 × 2
		300 × 500	356 × 2
		240 × 400	486 ×
		150 × 250	662×2
	Total		3400	378 (Dataset A)