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| title: quantity-lab | |
| emoji: 📏 | |
| colorFrom: indigo | |
| colorTo: gray | |
| sdk: static | |
| pinned: false | |
| license: mit | |
| short_description: "How small floor-plan errors distort area and room counts" | |
| # quantity-lab showcase | |
| A number written on a drawing is a claim, not a takeoff: an earlier hand takeoff, often partial, stale on revision. The per-room finishing quantities that drive a price — tile from the floor polygon, skirting from its perimeter, paint from wall area — are computed from the room polygon. So the polygon is what has to be right. | |
| How small geometry errors turn into wrong takeoff quantities. Pick a synthetic floor plan and a mode: the annotated rooms (oracle), a controlled error (rooms 2 or 5 px too small or too big, a missing divider, a spurious line), a classical OpenCV room baseline, or the pretrained CubiCasa5K segmentation model (its output on synthetic plans, computed ahead of time). The tables give measured results on ten held-out CubiCasa5K test plans, as numbers only. Everything was computed ahead of time; the page runs no model. | |
| Code (MIT): [github.com/dzakybd/quantity-lab](https://github.com/dzakybd/quantity-lab). Write-up: [dzaky.ai.id](https://dzaky.ai.id/en/blog/quantity-lab-takeoff-errors). | |
| CubiCasa5K: Kalervo et al., SCIA 2019, https://zenodo.org/records/2613548 (CC BY-NC-SA 4.0). No CubiCasa5K image is included in this Space. | |