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| # parameters | |
| nc: 1 # number of classes | |
| depth_multiple: 0.67 # model depth multiple | |
| width_multiple: 0.75 # layer channel multiple | |
| # anchors | |
| anchors: | |
| - [6,7, 9,11, 13,16] # P3/8 | |
| - [18,23, 26,33, 37,47] # P4/16 | |
| - [54,67, 77,104, 112,154] # P5/32 | |
| - [174,238, 258,355, 445,568] # P6/64 | |
| # YOLOv5 backbone | |
| backbone: | |
| # [from, number, module, args] | |
| [ [ -1, 1, StemBlock, [ 64, 3, 2 ] ], # 0-P1/2 | |
| [ -1, 3, C3, [ 128 ] ], | |
| [ -1, 1, Conv, [ 256, 3, 2 ] ], # 2-P3/8 | |
| [ -1, 9, C3, [ 256 ] ], | |
| [ -1, 1, Conv, [ 512, 3, 2 ] ], # 4-P4/16 | |
| [ -1, 9, C3, [ 512 ] ], | |
| [ -1, 1, Conv, [ 768, 3, 2 ] ], # 6-P5/32 | |
| [ -1, 3, C3, [ 768 ] ], | |
| [ -1, 1, Conv, [ 1024, 3, 2 ] ], # 8-P6/64 | |
| [ -1, 1, SPP, [ 1024, [ 3, 5, 7 ] ] ], | |
| [ -1, 3, C3, [ 1024, False ] ], # 10 | |
| ] | |
| # YOLOv5 head | |
| head: | |
| [ [ -1, 1, Conv, [ 768, 1, 1 ] ], | |
| [ -1, 1, nn.Upsample, [ None, 2, 'nearest' ] ], | |
| [ [ -1, 7 ], 1, Concat, [ 1 ] ], # cat backbone P5 | |
| [ -1, 3, C3, [ 768, False ] ], # 14 | |
| [ -1, 1, Conv, [ 512, 1, 1 ] ], | |
| [ -1, 1, nn.Upsample, [ None, 2, 'nearest' ] ], | |
| [ [ -1, 5 ], 1, Concat, [ 1 ] ], # cat backbone P4 | |
| [ -1, 3, C3, [ 512, False ] ], # 18 | |
| [ -1, 1, Conv, [ 256, 1, 1 ] ], | |
| [ -1, 1, nn.Upsample, [ None, 2, 'nearest' ] ], | |
| [ [ -1, 3 ], 1, Concat, [ 1 ] ], # cat backbone P3 | |
| [ -1, 3, C3, [ 256, False ] ], # 22 (P3/8-small) | |
| [ -1, 1, Conv, [ 256, 3, 2 ] ], | |
| [ [ -1, 19 ], 1, Concat, [ 1 ] ], # cat head P4 | |
| [ -1, 3, C3, [ 512, False ] ], # 25 (P4/16-medium) | |
| [ -1, 1, Conv, [ 512, 3, 2 ] ], | |
| [ [ -1, 15 ], 1, Concat, [ 1 ] ], # cat head P5 | |
| [ -1, 3, C3, [ 768, False ] ], # 28 (P5/32-large) | |
| [ -1, 1, Conv, [ 768, 3, 2 ] ], | |
| [ [ -1, 11 ], 1, Concat, [ 1 ] ], # cat head P6 | |
| [ -1, 3, C3, [ 1024, False ] ], # 31 (P6/64-xlarge) | |
| [ [ 22, 25, 28, 31 ], 1, Detect, [ nc, anchors ] ], # Detect(P3, P4, P5, P6) | |
| ] | |