Day 18: Editing and Correcting Signs

Goal

Learn what correction can involve.

Learn

• Correction may mean trimming the clip, fixing labels, removing bad frames, re-running pose extraction, correcting keypoints, smoothing motion, or rejecting the sample.
• The goal is not to make the data look pretty. The goal is to make the record truthful, traceable, and useful for the model task.
• Every correction should leave a note so future reviewers know what changed.

Example

• Failure: the clip starts before the signer is ready. Correction: trim start frames and update frame_start.
• Failure: right hand keypoints jump to the face for ten frames. Correction: try re-extraction, then manual fix or reject if the sign meaning is affected.
• Failure: gloss says PLEASE but video is THANK-YOU. Correction: fix the label or remove the sample from training.

Practice

1. Pick three failure types: bad trim, wrong gloss, missing fingertips.
2. For each one, write the correction action and the metadata note you would save.

Checkpoint

Pipeline note