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Video-Object-Detection
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# parameters
nc: 80  # number of classes
depth_multiple: 1.0  # model depth multiple
width_multiple: 1.0  # layer channel multiple

# anchors
anchors:
  - [12,16, 19,36, 40,28]  # P3/8
  - [36,75, 76,55, 72,146]  # P4/16
  - [142,110, 192,243, 459,401]  # P5/32

# yolov7x backbone
backbone:
  # [from, number, module, args]
  [[-1, 1, Conv, [40, 3, 1]],  # 0
  
   [-1, 1, Conv, [80, 3, 2]],  # 1-P1/2      
   [-1, 1, Conv, [80, 3, 1]],
   
   [-1, 1, Conv, [160, 3, 2]],  # 3-P2/4  
   [-1, 1, Conv, [64, 1, 1]],
   [-2, 1, Conv, [64, 1, 1]],
   [-1, 1, Conv, [64, 3, 1]],
   [-1, 1, Conv, [64, 3, 1]],
   [-1, 1, Conv, [64, 3, 1]],
   [-1, 1, Conv, [64, 3, 1]],
   [-1, 1, Conv, [64, 3, 1]],
   [-1, 1, Conv, [64, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [320, 1, 1]],  # 13
         
   [-1, 1, MP, []],
   [-1, 1, Conv, [160, 1, 1]],
   [-3, 1, Conv, [160, 1, 1]],
   [-1, 1, Conv, [160, 3, 2]],
   [[-1, -3], 1, Concat, [1]],  # 18-P3/8  
   [-1, 1, Conv, [128, 1, 1]],
   [-2, 1, Conv, [128, 1, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [640, 1, 1]],  # 28
         
   [-1, 1, MP, []],
   [-1, 1, Conv, [320, 1, 1]],
   [-3, 1, Conv, [320, 1, 1]],
   [-1, 1, Conv, [320, 3, 2]],
   [[-1, -3], 1, Concat, [1]],  # 33-P4/16  
   [-1, 1, Conv, [256, 1, 1]],
   [-2, 1, Conv, [256, 1, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [1280, 1, 1]],  # 43
         
   [-1, 1, MP, []],
   [-1, 1, Conv, [640, 1, 1]],
   [-3, 1, Conv, [640, 1, 1]],
   [-1, 1, Conv, [640, 3, 2]],
   [[-1, -3], 1, Concat, [1]],  # 48-P5/32  
   [-1, 1, Conv, [256, 1, 1]],
   [-2, 1, Conv, [256, 1, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [1280, 1, 1]],  # 58
  ]

# yolov7x head
head:
  [[-1, 1, SPPCSPC, [640]], # 59
  
   [-1, 1, Conv, [320, 1, 1]],
   [-1, 1, nn.Upsample, [None, 2, 'nearest']],
   [43, 1, Conv, [320, 1, 1]], # route backbone P4
   [[-1, -2], 1, Concat, [1]],
   
   [-1, 1, Conv, [256, 1, 1]],
   [-2, 1, Conv, [256, 1, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [320, 1, 1]], # 73
   
   [-1, 1, Conv, [160, 1, 1]],
   [-1, 1, nn.Upsample, [None, 2, 'nearest']],
   [28, 1, Conv, [160, 1, 1]], # route backbone P3
   [[-1, -2], 1, Concat, [1]],
   
   [-1, 1, Conv, [128, 1, 1]],
   [-2, 1, Conv, [128, 1, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [-1, 1, Conv, [128, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [160, 1, 1]], # 87
      
   [-1, 1, MP, []],
   [-1, 1, Conv, [160, 1, 1]],
   [-3, 1, Conv, [160, 1, 1]],
   [-1, 1, Conv, [160, 3, 2]],
   [[-1, -3, 73], 1, Concat, [1]],
   
   [-1, 1, Conv, [256, 1, 1]],
   [-2, 1, Conv, [256, 1, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [-1, 1, Conv, [256, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [320, 1, 1]], # 102
      
   [-1, 1, MP, []],
   [-1, 1, Conv, [320, 1, 1]],
   [-3, 1, Conv, [320, 1, 1]],
   [-1, 1, Conv, [320, 3, 2]],
   [[-1, -3, 59], 1, Concat, [1]],
   
   [-1, 1, Conv, [512, 1, 1]],
   [-2, 1, Conv, [512, 1, 1]],
   [-1, 1, Conv, [512, 3, 1]],
   [-1, 1, Conv, [512, 3, 1]],
   [-1, 1, Conv, [512, 3, 1]],
   [-1, 1, Conv, [512, 3, 1]],
   [-1, 1, Conv, [512, 3, 1]],
   [-1, 1, Conv, [512, 3, 1]],
   [[-1, -3, -5, -7, -8], 1, Concat, [1]],
   [-1, 1, Conv, [640, 1, 1]], # 117
   
   [87, 1, Conv, [320, 3, 1]],
   [102, 1, Conv, [640, 3, 1]],
   [117, 1, Conv, [1280, 3, 1]],

   [[118,119,120], 1, Detect, [nc, anchors]],   # Detect(P3, P4, P5)
  ]