Cv raft optical flow extraction
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- **wenmin-wu/cv-raft-optical-flow-extraction**: Extract dense per-pixel motion fields between consecutive video frames using a pretrained RAFT model, producing an HxWx2 flow tensor that can be channel-stacked with RGB or used as a standalone motion feature for action / impact / event detection Read `references/wenmin-wu/skills/cv/raft-optical-flow-extraction/SKILL.md`.
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