detect tennis balls moving on court

Hi all,

I would like to detect and count when a tennis ball is hit over to one side of the court. I just wonder what sensor i need to detect such a fast and long distance like this. Any advice is appreciate.

Thanks,

A high speed video camera and a powerful, fast computer running image processing software would be an option.

You would need to create a laser wall and count breaks. But then you'd need an apparatus that would be as tall as you'd want to still detect the ball.

You can look into OpenCV, but that is not an Arduino project.