Method and Device for Ball Impact Localization

A method for localizing ball impacts on a surface of an environment, the method comprising:

• obtaining, from a video source, video data of a ball in a ball game, the video data comprising video frames;
• detecting one or more moving blurs in a video, based on differences between any two consecutive video frames of the video;
• comparing parameters of the ball with parameters of the detected one or more moving blurs;
• associating one of the detected one or more moving blurs with the ball, when the parameters of the ball match the parameters of the one of the detected moving blurs;
• determining the dimensions of the moving blur being associated with the ball;
• detecting a ball impact in the video based on a change in dimensions of the moving blur associated with the ball;
• and
• localizing the ball impact on a surface, based on the change in the dimensions of the moving blur associated with the ball and parameters of the environment.

A device capable of localizing ball impacts on a surface of an environment, the device comprising:

• processing circuitry;
• memory containing instructions executable by the processing circuitry whereby the device is operative to:
• obtain, from a video source, video data of a ball in a ball game, the video data comprising video frames;
• detect one or more moving blurs in a video based on differences between any two consecutive video frames of the video;
• compare parameters of the ball with parameters of the detected one or more moving blurs;
• associate one of the detected moving blurs with the ball when the parameters of the ball match the parameters of the one of the detected moving blurs;
• determine the dimensions of the moving blur associated with the ball;
• detect a ball impact in the video based on a change in dimensions of the moving blur associated with the ball;
• and
• localize the ball impact on a surface based on the change in dimensions of the moving blur associated with the ball and parameters of the environment.

A non-transitory computer readable recording medium storing a computer program product for controlling a device for localizing ball impacts on a surface of an environment, the computer program product comprising software instructions which, when run on processing circuitry of the device, causes the device to:

• obtain, from a video source, video data of a ball in a ball game, the video data comprising video frames;
• detect one or more moving blurs in a video based on differences between any two consecutive video frames of the video;
• compare parameters of the ball with parameters of the detected one or more moving blurs;
• associate one of the detected moving blurs with the ball when the parameters of the ball match the parameters of the one of the detected moving blurs;
• determine the dimensions of the moving blur associated with the ball;
• detect a ball impact in the video based on a change in dimensions of the moving blur associated with the ball;
• and
• localize the ball impact on a surface based on the change in dimensions of the moving blur associated with the ball and parameters of the environment.