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CellSAM: a foundation model for cell segmentation
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DOI：10.1038/s41592-025-02879-w.png)
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Abstract
En 中文
Cells are a fundamental unit of biological organization, and identifying them in imaging data—cell segmentation—is a critical task for various cellular imaging experiments. Although deep learning methods have led to substantial progress on this problem, most models are specialist models that work well for specific domains but cannot be applied across domains or scale well with large amounts of data. Here we present CellSAM, a universal model for cell segmentation that generalizes across diverse cellular imaging data. CellSAM builds on top of the Segment Anything Model (SAM) by developing a prompt engineering approach for mask generation. We train an object detector, CellFinder, to automatically detect cells and prompt SAM to generate segmentations. We show that this approach allows a single model to achieve human-level performance for segmenting images of mammalian cells, yeast and bacteria collected across various imaging modalities. We show that CellSAM has strong zero-shot performance and can be improved with a few examples via few-shot learning. Additionally, we demonstrate how CellSAM can be applied across diverse bioimage analysis workflows. A deployed version of CellSAM is available at
https://cellsam.deepcell.org/
. CellSAM uses an object detector, CellFinder, to detect cells and prompt the Segment Anything Model (SAM) to generate segmentations. This universal model achieves human-level performance across a range of bioimaging data encompassing mammalian cells, yeast and bacteria.
Keywords:
Cell segmentation
Deep learning
Universal model
CellFinder
Segment Anything Model
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