Line Call Visualizer (Beta)

Upload a still frame, click twice to set a baseline (e.g., touchline), then click a third time to mark the ball. The tool draws a perpendicular decision line through the first point so you can reason about “in/out” calls. Export the annotated image as PNG.

Tip: For football offsides, choose two points along the touchline to define the baseline. The dashed line shows the perpendicular. For tennis, use the baseline as your baseline, then place the ball center.