Method for acquiring collision relationship and complete movement trail of billiards in snooker movement

The invention relates to a method for acquiring a collision relationship and a complete movement trail of billiards in snooker movement, which comprises the following steps of: acquiring successive frame images of the snooker movement, determining a surface coordinate position of each billiard of each of the frame images, and correcting the movement trail of collision points of the billiards in the movement trail of each billiard; and in the successive frame, judging whether a direction of the movement trail of the current billiard of the current frame is changed or not according to the change of the coordinate position of the movement trail of each billiard, if the direction is changed, judging the collision relationship, and correcting the coordinate of the current billiard at the collision points. The method has the advantages that: according to the disperse billiard position of the adjacent frames, the complete movement trail of the billiards is drawn in real time; data concerned in a match are given to help athletes analyze the direction and the intensity of stroke and help the athletes improve billiard level; and accurate data are provided and comprise a first collision sphere after the athlete hits the billiard, hazard and a pocket position, the out-of-bound billiard, and a hitting distance of the athlete.