Piotr Dollár
Research director at Meta's FAIR; co-author of Segment Anything, COCO and Mask R-CNN; SAM 3 project lead
- Research Director, FAIR, Meta (Facebook AI Research)12
Piotr Dollár is a research director at Facebook AI Research (FAIR) at Meta, working on deep learning and computer vision; Dollár's site says the role began in 2014, after helping co-found Anchovi Labs and spending some years at Microsoft Research. Dollár is a co-author of the original Segment Anything paper and of SAM 2, and is one of the project leads listed in the SAM 3 repository. Earlier work includes co-authorship of the Microsoft COCO dataset paper, Mask R-CNN, and Focal Loss, and Dollár is listed among the authors in the citation entry for FAIR's Detectron.12346789
Work
Segment Anything (SAM, SAM 2 and SAM 3)Open weights
Co-author of the Segment Anything paper (2023) and the SAM 2 paper (2024), an author of the SAM 3 paper (2025), and one of the project leads named in the SAM 3 repository README.3465
COCO dataset (external site: cocodataset.org)Open data
Co-author of "Microsoft COCO: Common Objects in Context" (2014), the paper that introduced the dataset.7
Mask R-CNN and Detectron (external site: github.com)Open-source code
Co-author of the Mask R-CNN paper (2017) and listed among the authors in the citation entry of Detectron, FAIR's Apache-2.0 object detection system.89
Other documented roles
Roles the sources document but that are not confirmed as current.
- Research at Microsoft Research, before joining FAIR in 2014, Microsoft Research1
- Helped co-found the company (acquired by Dropbox in 2012), Anchovi Labs1
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