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description: Explore Ultralytics YOLO neural network modules, Proto to BottleneckCSP. Detailed explanation of each module with easy-to-follow code examples. |
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keywords: YOLO, Ultralytics, neural network, nn.modules.block, Proto, HGBlock, SPPF, C2, C3, RepC3, C3Ghost, Bottleneck, BottleneckCSP |
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# Reference for `ultralytics/nn/modules/block.py` |
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!!! note |
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Full source code for this file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/modules/block.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/modules/block.py). Help us fix any issues you see by submitting a [Pull Request](https://docs.ultralytics.com/help/contributing/) 🛠️. Thank you 🙏! |
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## ::: ultralytics.nn.modules.block.DFL |
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<br><br> |
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## ::: ultralytics.nn.modules.block.Proto |
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<br><br> |
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## ::: ultralytics.nn.modules.block.HGStem |
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<br><br> |
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## ::: ultralytics.nn.modules.block.HGBlock |
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<br><br> |
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## ::: ultralytics.nn.modules.block.SPP |
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<br><br> |
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## ::: ultralytics.nn.modules.block.SPPF |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C1 |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C2 |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C2f |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C3 |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C3x |
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<br><br> |
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## ::: ultralytics.nn.modules.block.RepC3 |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C3TR |
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<br><br> |
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## ::: ultralytics.nn.modules.block.C3Ghost |
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<br><br> |
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## ::: ultralytics.nn.modules.block.GhostBottleneck |
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<br><br> |
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## ::: ultralytics.nn.modules.block.Bottleneck |
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<br><br> |
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## ::: ultralytics.nn.modules.block.BottleneckCSP |
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<br><br> |
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