# Capture

Runs in the browser on phone and PC.

## Output

From one approved reference photo:

- Inventory PNG: transparent, 3:4, slab centered, 80% fill at extremes, shorter side at least 1600px when the source allows
- Widths (min, max, avg) sampled every 6 in along the length axis
- `sqft = (mask_pixels / scale²) / 144` (2 decimals)
- `bdft = sqft × thickness_in` (2 decimals)

`scale = longest_axis_px / L` where `L` is user length in inches (1/8 in steps).

## Controls

- Sheet: Auto, Green, or Black
- Sensitivity: one slider
- Overlay on the source photo, updated as the slider moves

User approves the edge, then the PNG and measurements run.

Length axis comes from the mask. User may rotate it. Thickness is a user 1/8 in pick.

Source below the PNG size floor requires a new photo.