레이저 및 영상 센서 시스템을 이용한 농구 골대 위치 변화 측정에 관한 연구

The purpose of this study was to analyze variation measurement of basket ball rim position using measuring equipment based on laser and image sensor system. To evaluate position error of basketball rim during the game after basketball rim impact, we developed the measuring equipment using laser and camera system and compared between two different basketball rim with 300kg and 350kg of static load. The basketball rim with 300kg static load showed significant change of height, anterior/posterior, and lateral/medial movements. The basketball rim with 350kg static load also showed significant change of anterior/posterior and lateral/medial movements. During the 40 minutes of the game simulation, anterior/posterior movements of basketball rim were greater than the height or lateral/medial movements. Although this study found the significant changes of three axis rim movement the actual variation scale was very small. However, in real basketball game, if tall and heavy professional players slam dunk or have strong physical contact with basketball rim and backboard it is inevitable to have larger scale variations. This variation might be a critical factor affect the success rate of free throw or field throw during the game.