sam3

Segment Anything 3 — text-, point-, and box-prompted instance segmentation, plus a stateful streaming video tracker that carries object identity through SAM3's memory bank. Use when a workflow needs open-vocabulary masks from an RGB image or needs to follow one object across frames.

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Repository: graph-robots/open-robot-skills
Last source activity: July 2, 2026 at 19:26
Detected SKILL.md language: English
Stars: 58
Forks: 8

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name	sam3
description	Segment Anything 3 — text-, point-, and box-prompted instance segmentation, plus a stateful streaming video tracker that carries object identity through SAM3's memory bank. Use when a workflow needs open-vocabulary masks from an RGB image or needs to follow one object across frames.

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grasping-concave-contour

Grasp an awkward rigid part by the waists in its own silhouette — take the alpha shape of its point cloud from above, find where that boundary turns inward, and close the jaws across a pair of those inward runs. Use when a part has no graspable long axis and no pair of parallel walls an OBB would find — pliers and scissors gripped at the joint, a spool at its neck, a gear between two teeth, a bulb socket at its skirt. Use grasping-linear-feature instead for handles, rods and shafts, and grasping-short-axis when an upright box is enough.

2026-09-13

grasping-linear-feature

Fit the full 3D axis of an elongated segmented feature and grasp it with a perpendicular, inclination-aware parallel-jaw pose. Use for handles, rods, shafts, tools, utensils, and other linear parts whose pitch or roll matters; use grasping-short-axis instead when an upright OBB and vertical approach are sufficient.

2026-09-13

curve

Ordered centrelines of deformable linear objects — skeletonises a cable, rope or hose mask, recovers one traversal order through occlusion breaks and self-crossings (TrackDLO's chain merge), back-projects the ordered pixels through depth onto the object's axis as an arc-length-parameterised polyline, and carries a known centreline onto the next frame with motion imputed for hidden stretches. Use when a workflow needs an ordered centreline of a cable, rope or hose from a mask and a depth frame, or must carry one through occlusion between frames.

2026-09-12

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sam3

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