Image processing for launch parameters measurement of objects in flight

A launch monitor system comprising:

• two cameras;
• and
• a processor configured to execute computer instructions to cause a computing system to perform operations for measuring launch parameters of an object in flight, the operations comprising:
• capturing a plurality of images of an object in flight;
• identifying a radius of the object and a center of the object in each of the plurality of images;
• calculating a velocity, an elevation angle, and an azimuth angle based on the radius of the object, the center of the object, and pre-measured camera alignment values;
• cropping the plurality of images to a smallest square that bounds the object;
• flattening the plurality of images from spherical representations to Cartesian representations;
• converting the Cartesian representations to polar coordinates with a range of candidate centers of rotation;
• and
• based on a fit of the polar image pair, measuring the spin axis and spin rate.