Papers › MuST: Multi-Scale Transformers for Surgical Phase Recognition
MuST: Multi-Scale Transformers for Surgical Phase Recognition
Alejandra Pérez, Santiago Rodríguez, Nicolás Ayobi, Nicolás Aparicio, Eugénie Dessevres, Pablo Arbeláez
Phase recognition in surgical videos is crucial for enhancing computer-aided surgical systems as it enables automated understanding of sequential procedural stages. Existing methods often rely on fixed temporal windows for video analysis to identify dynamic surgical phases. Thus, they struggle to simultaneously capture short-, mid-, and long-term information necessary to fully understand complex surgical procedures. To address these issues, we propose Multi-Scale Transformers for Surgical Phase Recognition (MuST), a novel Transformer-based approach that combines a Multi-Term Frame encoder with a Temporal Consistency Module to capture information across multiple temporal scales of a surgical video. Our Multi-Term Frame Encoder computes interdependencies across a hierarchy of temporal scales by sampling sequences at increasing strides around the frame of interest. Furthermore, we employ a long-term Transformer encoder over the frame embeddings to further enhance long-term reasoning. MuST achieves higher performance than previous state-of-the-art methods on three different public benchmarks.
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Code
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Surgical phase recognition | Cholec80 | MuST | F1 | 85.57 | #3 of 6 | Archive leaderboard | report |
| Surgical phase recognition | GraSP | MuST | mAP | 79.14 | #1 of 2 | Archive leaderboard | report |
| Surgical phase recognition | HeiChole Benchmark | MuST | F1 | 77.25 | #1 of 5 | Archive leaderboard | report |
| Surgical phase recognition | MISAW | MuST | mAP | 98.08 | #1 of 3 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
Methods
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