📍 Reference Point Guide
Rugby Field Reference Points
Points are named by their position on the field:
🔲 Corners
corner_top_left, corner_top_right, etc. - The 4 corners of the field
🏁 Try Lines
Goal lines at each end (left/right refers to which end)
📏 22m Lines
22 meters from each try line
📏 10m Lines
10 meters from halfway line
📏 5m Lines
5m lineout lines (5m inside from touchlines) - Often visible when touchline is off-screen!
📏 15m Lines
15m from touchlines (lineout throwing distance)
➖ Halfway
The center line of the field
Position naming:
• top/bottom = upper/lower touchline (sideline)
• center = middle of the field
• left/right = which end of the field
How to Calibrate
- Select a video and find a frame with 4+ visible markings
- Click a reference point in the grid to select it
- Click on the video where that marking appears
- Repeat until you have 4+ points on the same frame
- Click Compute Homographies
- Click Propagate to extend to all frames
- Save your calibration as a version
