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Pick a photograph, then press a read on the right. The models are fetched once, run in this tab on the CPU, and no pixel is ever uploaded anywhere.
Face landmarks (478 mesh points, CPU)
Not run.
Body pose (33 points)
Not run.
Edges, PSF & resolving power
Not run.
Total-least-squares geometry
Click points on the canvas (a seam, a kerb, a door edge), then fit. Residuals come back with the line.
The page's own ground truth
The same fixtures the rack runs server-side: a line of known slope, a circle of known centre and radius, an edge at a known sub-pixel position. If these pass, the arithmetic in this page is the arithmetic that produced your numbers.
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