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yolov26_3d/docs/en/reference/nn/modules/block.md
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Explore detailed documentation of block modules in Ultralytics, available for deep learning tasks. Contribute and improve the codebase. Ultralytics, YOLO, neural networks, block modules, DFL, Proto, HGStem, HGBlock, SPP, SPPF, C1, C2, C2f, C3, C3x, RepC3, C3TR, C3Ghost, GhostBottleneck, Bottleneck, BottleneckCSP, ResNetBlock, MaxSigmoidAttnBlock, ImagePoolingAttn, ContrastiveHead, RepBottleneck, RepCSP, RepNCSPELAN4, ADown, SPPELAN, Silence, CBLinear, CBFuse

Reference for ultralytics/nn/modules/block.py

!!! success "Improvements"

This page is sourced from [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/modules/block.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/nn/modules/block.py). Have an improvement or example to add? Open a [Pull Request](https://docs.ultralytics.com/help/contributing/) — thank you! 🙏

::: ultralytics.nn.modules.block.DFL





::: ultralytics.nn.modules.block.Proto





::: ultralytics.nn.modules.block.HGStem





::: ultralytics.nn.modules.block.HGBlock





::: ultralytics.nn.modules.block.SPP





::: ultralytics.nn.modules.block.SPPF





::: ultralytics.nn.modules.block.C1





::: ultralytics.nn.modules.block.C2





::: ultralytics.nn.modules.block.C2f





::: ultralytics.nn.modules.block.C3





::: ultralytics.nn.modules.block.C3x





::: ultralytics.nn.modules.block.RepC3





::: ultralytics.nn.modules.block.C3TR





::: ultralytics.nn.modules.block.C3Ghost





::: ultralytics.nn.modules.block.GhostBottleneck





::: ultralytics.nn.modules.block.Bottleneck





::: ultralytics.nn.modules.block.BottleneckCSP





::: ultralytics.nn.modules.block.ResNetBlock





::: ultralytics.nn.modules.block.ResNetLayer





::: ultralytics.nn.modules.block.MaxSigmoidAttnBlock





::: ultralytics.nn.modules.block.C2fAttn





::: ultralytics.nn.modules.block.ImagePoolingAttn





::: ultralytics.nn.modules.block.ContrastiveHead





::: ultralytics.nn.modules.block.BNContrastiveHead





::: ultralytics.nn.modules.block.RepBottleneck





::: ultralytics.nn.modules.block.RepCSP





::: ultralytics.nn.modules.block.RepNCSPELAN4





::: ultralytics.nn.modules.block.ELAN1





::: ultralytics.nn.modules.block.AConv





::: ultralytics.nn.modules.block.ADown





::: ultralytics.nn.modules.block.SPPELAN





::: ultralytics.nn.modules.block.CBLinear





::: ultralytics.nn.modules.block.CBFuse





::: ultralytics.nn.modules.block.C3f





::: ultralytics.nn.modules.block.C3k2





::: ultralytics.nn.modules.block.C3k





::: ultralytics.nn.modules.block.RepVGGDW





::: ultralytics.nn.modules.block.CIB





::: ultralytics.nn.modules.block.C2fCIB





::: ultralytics.nn.modules.block.Attention





::: ultralytics.nn.modules.block.PSABlock





::: ultralytics.nn.modules.block.PSA





::: ultralytics.nn.modules.block.C2PSA





::: ultralytics.nn.modules.block.C2fPSA





::: ultralytics.nn.modules.block.SCDown





::: ultralytics.nn.modules.block.TorchVision





::: ultralytics.nn.modules.block.AAttn





::: ultralytics.nn.modules.block.ABlock





::: ultralytics.nn.modules.block.A2C2f





::: ultralytics.nn.modules.block.SwiGLUFFN





::: ultralytics.nn.modules.block.Residual





::: ultralytics.nn.modules.block.SAVPE





::: ultralytics.nn.modules.block.Proto26





::: ultralytics.nn.modules.block.RealNVP