How SAM 3.1 + DINOv3 watch a surgical tray: 0.82+ matches are in place, 0.77 flags a look-alike
MaziyarPanahi · x · 2026-10-05
The author breaks down how a vision-model pipeline monitors a surgical instrument tray: SAM 3.1 segments the tray at given timestamps, and DINOv3 compares what's inside each mask.
Thresholds in action: an osteotome's best look-alike scored 0.77, while everything still on the tray matched at 0.82+ — the gap separates "in place" from "foreign object." The clip plays at 5x, and hidden or out-of-frame instruments are not compared.
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