Author(s): HU, B., YUAN, T., GUO, Q., GAO, D., LU, Q., Institution: CHINA INSTITUTE OF SPORT SCIENCE, Country: CHINA, Abstract-ID: 838

INTRODUCTION:
The purpose of this paper is to use video panorama processing technology to analyze the mens 100m final of the 2023 National Athletics Championships, World Championships, and Asian Games Trials, with the champion Zhenye Xie as the object of study. The game is filmed on-site to obtain first-hand video data, and then the action is decomposed using the Dartfish software to derive a segmented panoramic image and a panoramic video.
METHODS:
The research methods mainly include literature review, surveys,data analysis, experimental methods, and software development. The entire 100m course was divided into five sections, with five camera positions focusing on shooting images within the distance range , and finally five videos were shot, which were used to extract the panoramic image.Then, using "Timing""measure" function to get the key kinematic indexes and make a further analysis.
RESULTS:
In this race, the champion Zhenye Xie ran a total of 46.5 steps in 10.09s. Measurement of the panorama of each segment yielded that his average step length was 2.13m, the minimum step length was the 1st step, 1.31m, and the maximum step length was the 35th step, 2.38m; his average step time was calculated to be 0.21s, the maximum step time was the 1st step, 0.48s, and the minimum step time was the 38th and 39th steps, 0.17s. 0.17s; his average step speed was calculated to be 10.53m/s, the minimum step speed was 1.31m/s for step 1, and the maximum step speed was 13.59m/s for step 38.the average speeds of the section were as follows:section 1, 0-20m,6.80m/s; section 2, 20-40m,10.99m/s, section 3,40-60m, 11.56m/s; section 4,60-80m, 11.49m/s, section 5, 80-100m, 11.30m/s.
CONCLUSION:
Video panorama technology and panorama splicing technology can be used as a powerful analytical tool for speed projects, which can amplify the athletic performance of the players in the process of rapid sports, and provide a means for researchers to grasp the technical characteristics of the athletes more accurately, in which the process of pre-collection of data needs to be strictly controlled by the collection tools to improve the quality of video processing and improve the accuracy of the measurement data. The following is a summary of the data collected during the first stage of the game.Video collection, frame analysis and panorama extraction were carried out in this game to visualise the sports performance; Zhenye Xies performance was broken down into frames to obtain key kinematic parameter indexes: stride length, stride time, stride speed, segment timing, segment speed and so on. In the perspective of video panorama analysis, due to the differences existing in the shooting of different camera positions, there is a certain human error in the acquisition of kinematic indexes, and the use of finer units of measurement reference values and the interception of a larger range of front and side images are conducive to the reduction of errors and the enhancement of the accuracy of the analysis.