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- # YOLOv5 🚀 by Ultralytics, GPL-3.0 license
- # Parameters
- nc: 80 # number of classes
- depth_multiple: 0.33 # save_models depth multiple
- width_multiple: 0.50 # layer channel multiple
- anchors: 3 # AutoAnchor evolves 3 anchors per P output layer
- # YOLOv5 v6.0 backbone
- backbone:
- # [from, number, module, args]
- [ [ -1, 1, Conv, [ 64, 6, 2, 2 ] ], # 0-P1/2
- [ -1, 1, Conv, [ 128, 3, 2 ] ], # 1-P2/4
- [ -1, 3, C3, [ 128 ] ],
- [ -1, 1, Conv, [ 256, 3, 2 ] ], # 3-P3/8
- [ -1, 6, C3, [ 256 ] ],
- [ -1, 1, Conv, [ 512, 3, 2 ] ], # 5-P4/16
- [ -1, 9, C3, [ 512 ] ],
- [ -1, 1, Conv, [ 1024, 3, 2 ] ], # 7-P5/32
- [ -1, 3, C3, [ 1024 ] ],
- [ -1, 1, SPPF, [ 1024, 5 ] ], # 9
- ]
- # YOLOv5 v6.0 head with (P3, P4) outputs
- head:
- [ [ -1, 1, Conv, [ 512, 1, 1 ] ],
- [ -1, 1, nn.Upsample, [ None, 2, 'nearest' ] ],
- [ [ -1, 6 ], 1, Concat, [ 1 ] ], # cat backbone P4
- [ -1, 3, C3, [ 512, False ] ], # 13
- [ -1, 1, Conv, [ 256, 1, 1 ] ],
- [ -1, 1, nn.Upsample, [ None, 2, 'nearest' ] ],
- [ [ -1, 4 ], 1, Concat, [ 1 ] ], # cat backbone P3
- [ -1, 3, C3, [ 256, False ] ], # 17 (P3/8-small)
- [ -1, 1, Conv, [ 256, 3, 2 ] ],
- [ [ -1, 14 ], 1, Concat, [ 1 ] ], # cat head P4
- [ -1, 3, C3, [ 512, False ] ], # 20 (P4/16-medium)
- [ [ 17, 20 ], 1, Detect, [ nc, anchors ] ], # Detect(P3, P4)
- ]
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