| 摘要 |
A system and methods for automatically determining the states of game object possession, including those of free, under contention and in possession, for sporting contests. The system uses the minimum necessary and sufficient data 100, including the predefined tracking layout 110, the current official game time-in versus time-out data 122, the current centroid location of each player matched with their identity data 124 and the current centroid location of the game object data 126 which is then converted deterministically into at least clock states 150, game object movement states 160, and optionally into game object location states 170 and game object heading direction states 180. The system and methods also disclose the further combining of these states 150, 160, 170 and 180 into the determination of the cycle of possession flow 200, including the events of gaming control 210, exchanging control 220 and relinquishing control 230. For determining the states of possession of the game object, the system and methods disclose using either an instantaneous or average measured distance between each player and the game object R in combination with a minimum radius MmR defining each player's area of influence and a minimum time MmT necessary for the game object to be within this area before possession can be assigned. Variations include using instantaneous R or average R, using a dynamically calculated MmT based upon any combination of game object and player trajectory and velocity. Also taught is a variation for assigning possession based upon a minimum alteration in the game object's trajectory and / or acceleration once it has entered a players area of influence and is also outside all other player's area of influence. |
