Pitch calibration

1Click a landmark on the pitch diagram. 2Click the same spot on the photo. Four or more pairs and the fit appears over the photo.

Photo

Pick a landmark on the diagram first.

Model pitch · 105 × 68 m

No landmark selected.

Fit

Points on this frame0

Geometry—

Mean reprojection error—

Worst point—

Frames calibrated0

Export

Saves to this browser automatically. Download writes calibration.json for the pipeline.

Pitch length is an open question. The diagram assumes the regulation 105 m, but fitting the penalty area and the halfway line together on this ground reads about 102 m, checked against the centre circle, whose 9.15 m radius is fixed by Law everywhere. The durable part of the export is the landmark name and its pixel position; the metre values can be recomputed under either assumption.