Analysis And Research Of The Shot-put Measuring Technology Based O Video Image Processing

In recent years the computer vision inspection technology based on video image processing has become a hotspot, and have been widely used in many areas. In modern sports, the application of the technology can make the judgement of the sports scores from traditional stage by artificial experience ascent to automatic scientific judgement level. However, at present, there is no such report in domestic regarding to the application of the computer visual inspection technology in the measurement of the competition result of shot put.Against the artificial measurement error in shot game caused by such factors as flexibility of measuring tools, rough site and and man-made interference, and so affects the game's scientific and fair problems, the article analyzes the current domestic and foreign relevant monocular vision measuring technique, and puts forward the idea to use monocular vision measuring technology in the measurement of the competition result of shot put. Combined with the characteristics of shot put field, puts forward "the identical view geometry calibration method based on rules" and "the grid matching mathematical model based on identical view objects coordinate transformation", the model uses the perspective projection of geometric relationships to calibrate camera parameters, and measures the ground plane coordinates of landing shot through the monocular CCD camera image plane coordinates.This paper expounds the key technologies of design and implementation of the shot put measuring system based on monocular vision, including hardware system, frontend image acquisition system and backend results measuring system, etc. Gives the system test and error analysis, verifies the methond's accuracy, stability and high efficiency. If join the system the trajectory of shot put operation, it will expand system scope of application, and this needs further study.The result of this paper expands the application in sports of vision measuring technology, and has been applied in sports skill testing of the university entrance exam in Heilongjiang province. Practice shows that it has such characteristics as simple structure, low cost, convenient operation, quick speed and wide range of application, and has wide application future and spreding value.