Crane Hook Annotation

Use this skill when the user has many similar site-monitoring images and wants the crane hook outlined with a strict polygon rather than a loose box.

Workflow

1. 1. Confirm the images are from a similar viewpoint.
2. Run annotate-crane-hooks.ps1 on one sample image first.
3. Inspect the annotated output and the manifest JSON.
4. If the hook is consistently shifted, edit default-monitoring-profile.json.
5. Re-run the same script on the full directory once the sample looks right.

Quick Start

Run a sample image:

CODEBLOCK0

Run a directory:

CODEBLOCK1

Outputs

• - annotated/: annotated images with the strict hook polygon and label
• INLINECODE1: optional ROI crops for inspection
• INLINECODE2: one record per image with component bbox, polygon points, and status

Tuning

Read profile-tuning.md when:

• - the hook is detected but the outline is systematically shifted
• the hook search area is too narrow or too wide
• the user changes camera angle or image resolution
• a different site needs its own profile

Adjust these fields first:

• - INLINECODE3
• INLINECODE4
• INLINECODE5
• INLINECODE6
• INLINECODE7

Notes

• - The current default profile is calibrated from the accepted hook outline in this workspace.
• The script assumes a bright metal hook against a darker construction background.
• Batch execution is safest when images come from the same or a very similar camera setup.