ultralytics/docs/en/reference/models/sam/modules/blocks.md

metadata

description: >-
  Explore detailed documentation of various SAM and SAM 2 modules such as
  MaskDownSampler, CXBlock, and more, available in Ultralytics' repository.
keywords: >-
  Ultralytics, SAM encoder, SAM 2 encoder, DropPath, MaskDownSampler, CXBlock,
  Fuser, TwoWayTransformer, TwoWayAttentionBlock, RoPEAttention,
  MultiScaleAttention, MultiScaleBlock. PositionEmbeddingSine, do_pool

Reference for ultralytics/models/sam/modules/blocks.py

!!! Note

This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/sam/modules/blocks.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/sam/modules/blocks.py). If you spot a problem please help fix it by [contributing](https://docs.ultralytics.com/help/contributing/) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/models/sam/modules/blocks.py) 🛠️. Thank you 🙏!

::: ultralytics.models.sam.modules.blocks.DropPath

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::: ultralytics.models.sam.modules.blocks.MaskDownSampler

---

::: ultralytics.models.sam.modules.blocks.CXBlock

---

::: ultralytics.models.sam.modules.blocks.Fuser

---

::: ultralytics.models.sam.modules.blocks.SAM2TwoWayAttentionBlock

---

::: ultralytics.models.sam.modules.blocks.SAM2TwoWayTransformer

---

::: ultralytics.models.sam.modules.blocks.RoPEAttention

---

::: ultralytics.models.sam.modules.blocks.MultiScaleAttention

---

::: ultralytics.models.sam.modules.blocks.MultiScaleBlock

---

::: ultralytics.models.sam.modules.blocks.PositionEmbeddingSine

---

::: ultralytics.models.sam.modules.blocks.PositionEmbeddingRandom

---

::: ultralytics.models.sam.modules.blocks.Block

---

::: ultralytics.models.sam.modules.blocks.REAttention

---

::: ultralytics.models.sam.modules.blocks.PatchEmbed

---

::: ultralytics.models.sam.modules.blocks.do_pool