halfcenturyup
Well-Known Member
- Joined
- 12 Oct 2009
- Messages
- 12,117
Well at the moment it is the last frame in which the ball is shown to be in contact with the foot. But I don’t like the current system and don’t know why we’re still using it.
Semi-automated offside uses sensors in the ball to detect when it is played to within a 2ms time window and an accuracy of millimetres. Far better than any human linesman could resolve.
IIrc, UEFA SAOT doesn't use a sensor in the ball, it uses video imagery which they say can interpolate positions between frames. But I don't believe the accuracy of it :)