Determination system of optimized camera view point for soccer scene by tracking a ball

摘要

In this paper, a new method for determining an optimized camera view point for soccer scene by tracking a ball is proposed. Soccer scene is taken by multiple fixed cameras. First, template matching is implemented for images taken with each camera to detect and to track a ball. If the ball is occluded in one of images, the ball is tracked by using the position of the extracted ball in other camera. After the detection of the ball is done for all images, information of each hall position are integrated by using the geometrical relationship between cameras that is represented by Fundamental Matrix. For determining the optimized camera view, we define an evaluation function of camera selection based on the trajectory of the ball. The system selects camera viewpoint of each frame automatically by finding the camera that gives maximum evaluation of camera selection. Experimental results demonstrate that the optimized viewpoint is successfully selected for soccer scene by using the proposed system.