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docs: state mask as background removal

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Ty
2026-09-11 14:05:24 +00:00
parent 18294f6ed8
commit f63f95a730
1 changed files with 4 additions and 4 deletions
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docs/CAPTURE.md
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@@ -5,12 +5,12 @@ Runs in the browser on phone and PC.
## Flow ## Flow
1. User adds one slab photo. First photo is top-down, lens parallel to the face. 1. User adds one slab photo. First photo is top-down, lens parallel to the face.
2. App draws a mask overlay on the source photo. Controls: sheet Auto / Green / Black, one sensitivity slider. Overlay updates as the slider moves. 2. App removes the background and shows a mask overlay on the source photo: slab pixels vs removed pixels. Controls: sheet Auto / Green / Black, one sensitivity slider. Overlay updates as the slider moves.
3. User adjusts until the mask edge sits on the slab, then approves the mask. 3. User adjusts until only the slab remains, then approves the mask. That approved mask is the slab footprint for every later step.
4. App draws the minimum-area bounding rectangle of the mask and the length axis on the long side of that rectangle. User rotates the axis if it does not follow the slab length, then approves the axis. 4. App draws the minimum-area bounding rectangle of the mask and the length axis on the long side of that rectangle. User rotates the axis if it does not follow the slab length, then approves the axis.
5. User enters length `L` in inches (1/8 in steps) and thickness (1/8 in steps). 5. User enters length `L` in inches (1/8 in steps) and thickness (1/8 in steps).
6. App sets `scale = longest_axis_px / L`. 6. App sets `scale = longest_axis_px / L`.
7. App computes widths, sqft, and bdft, and writes the inventory PNG. 7. App computes widths, sqft, and bdft from the mask, and writes the inventory PNG with the background gone.
8. User sees the PNG and the numbers. 8. User sees the PNG and the numbers.
## Measurements ## Measurements
@@ -21,4 +21,4 @@ Runs in the browser on phone and PC.
## Inventory PNG ## Inventory PNG
Transparent, 3:4, slab centered, 80% fill at extremes. Shorter side at least 1600px when the source allows. Source below that floor requires a new photo. Transparent (background removed), 3:4, slab centered, 80% fill at extremes. Shorter side at least 1600px when the source allows. Source below that floor requires a new photo.