---
description: Explore detailed documentation of various SAM encoder modules such as ImageEncoderViT, PromptEncoder, and more, available in Ultralytics' repository.
keywords: Ultralytics, SAM encoder, ImageEncoderViT, PromptEncoder, PositionEmbeddingRandom, Block, Attention, PatchEmbed
---

# Reference for `ultralytics/models/sam/modules/encoders.py`

!!! Note

    This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/sam/modules/encoders.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/sam/modules/encoders.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/encoders.py) 🛠️. Thank you 🙏!

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## ::: ultralytics.models.sam.modules.encoders.ImageEncoderViT

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## ::: ultralytics.models.sam.modules.encoders.PromptEncoder

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## ::: ultralytics.models.sam.modules.encoders.MemoryEncoder

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## ::: ultralytics.models.sam.modules.encoders.ImageEncoder

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## ::: ultralytics.models.sam.modules.encoders.FpnNeck

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## ::: ultralytics.models.sam.modules.encoders.Hiera

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