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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
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# 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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