Video stitching-based multi-camera collaborative swimming speed measurement method and system

The invention discloses a multi-camera collaborative swimming exercise speed measurement method and system based on video stitching, and belongs to the field of exercise measurement. Multiple cameras are triggered through multiple threads to synchronously collect picture information of the natatorium, images collected by the multiple cameras in real time are spliced through a video splicing method, a single wide-angle picture of the natatorium is obtained, target tracking and positioning are carried out through YOLOv5 target detection and an ISORT target tracking algorithm, and a wide-angle picture of the natatorium is obtained. Finally, world coordinates of the athlete are obtained according to an internal reference correction and external reference calibration module, and cooperative positioning and speed measurement of multiple cameras can be realized. The method has the advantages of small limitation on venues and acquisition equipment, high picture splicing accuracy, easy troubleshooting, easy engineerin