It is important that the video can be saved for the jury, in case there is a disputed jump.Īs I know, the new rule has not yet been restricted to any age-groups - if there is a board, the jump should be judged by the new rule of foul.Īre you familiar with the android application Photo Finish, developed by the brothers Johann-Lukas and Arthur Voigt? They use two picture on both sides of an arbitrary line and count the pixels along the line to estimate the intermediate crossing. An interpolated line of no crossing would increase the sensitivity.as well as higher resolution.
With a ground contact time of 0,1-0,15 seconds, there will be 3-5 pictures at 30fps, 6-10 at 60fps, 10-15 at 100fps. I have drawn a line not to be crossed before the foot lifts off the board. I tried out Kinovea 'as is' and it could very nicely be configured to start a 1,5s video by the sound of impact on the board (a photo cell would be more secure in a noisy environment, of course), send the video to be played in slow motion by another instance of Kinovea on a second screen for visual check.
