TABLE 1.

Lumbar MRI DarkNet-53 architecture.

	Type	Filters	Size	Output
	Convolutional	32	3 × 3	512 × 512
	Convolutional	64	3 × 3/2	256 × 256
	Convolutional	32	1 × 1	–
1X	Convolutional	64	3 × 3	–
	Shortcut layer	256 × 256
	Convolutional	128	3 × 3/2	128 × 128
	Convolutional	64	1 × 1	V
2X	Convolutional	128	3 × 3	–
	Shortcut layer	128 × 128
	Convolutional	256	3 × 3/2	64 × 64
	Convolutional	128	1 × 1	–
8X	Convolutional	256	3 × 3	–
	Shortcut layer	64 × 64
	Convolutional	256	3 × 3/2	32 × 32
	Convolutional	128	1 × 1	–
8X	Convolutional	256	3 × 3	–
	Shortcut layer	32 × 32
	Convolutional	256	3 × 3/2	16 × 16
	Convolutional	128	1 × 1/1	–
4X	Convolutional	256	3 × 3/1	–
	Shortcut layer	16 × 16
	Avgpool Connected Softmax	–	Global 1000	–