Shuttle Speed uses image processing techniques to capture the shuttle flight path. Most cell phone or tablet cameras capture about 30/60 frames per second, and the shuttle path appears as a streak in photos. Our engineers call these “contours”. Device cameras are typically capable of recording 2-4 contours before the shuttle crosses the net and leaves the camera frame.
The Shuttle Speed app calculates the speed of your smash from each of these captured contours. As the shuttle slows down, the speed decreases with each contour. This change in speed is used to fit into our shuttle flight model which can calculate the shuttle speed at both the beginning and the end of the smash.