Shot outcomeFor any attacking kind of a shot our AI algorithm automatically identifies the final outcome as either a pocketed ball or a miss. Shots that don't fall under attacking category are identified as safeties. The shot is considered to be attacking if a player has a feasible chance to pocket an object ball, which is backed up by the player's aggregate actions.

Cut angleThis is an angle between the direction of aiming line and the direction of object ball movement. 0 degrees corresponds to a straight shot, while 90 degrees is considered to be marginal and most severe cut angle (which in reality is about 85-88 degrees).

Shot speedSpeed is utilized by the player to drive the cue ball and transfer certain impact from the cue stick to the ball

Shot distanceDistance between the cue ball and the object ball (automatically measured in meters from video capture).

Distance to the pocketDistance from the object ball to the pocket (automatically measured in meters from video capture).

Cue ball travel distanceDistance of cue ball travel after object ball contact (automatically measured in meters from video capture).

EnglishSpin direction applied to the cue ball by the player with the cue tip.

Shot durationNumber of seconds measured from the moment when all balls come to rest at the end of an inning of from the beginning of a shot up to the moment when all moving balls come to rest.

Geometric shot difficulty measures how narrow the allowable cue-ball aiming window is for a feasible direct pot. It uses the ball positions, the selected pocket, table dimensions, and ball and pocket sizes. The score is calculated independently of whether the attempt succeeds. The current formula does not include speed, spin, cushion routes, or position for the next shot. The score is inversely proportional to the admissible initial cue-ball angular interval. Read the complete formula and illustrated calculations.