Design And Implementation Of Command Training System For Yabuli Cross-country Skiing Field

Cross-country Skiing is a disadvantage project for winter sports in our country.During traditional cross-country skiing training,there is old equipment and empiricism but not scientific awareness.Emerging technology has not been fully utilized.Therefore,it's hard to have favorable achievements.The recent survey found that technology is playing a more and more import role in the modern game.In order to improve the quality of training of cross-country skiing and speed up the preparation for 2022 Winter Olympic Games,A command system using advanced technology for cross-country skiing's train is highly needed.it's of great significance to improve the scientific level of training and deepen the knowledge of cross-country skiing.The command training system for Yabuli cross-country skiing field was designed and established so as to overcome the drawbacks of traditional training program according to users' demand.The system making full use of Internet of things,big data and object tracking technologies has the functions of collection,storage,processing of multi-source data,video surveillance,object tracking and video playback,etc.it can provide data support and reliable service for scientific training.Equipment was selected to adapt to the functions and requirements of the system.Data transmission network and storage facilities were established to complete the establishment of the hardware platform.Based on the hardware platform,the data management system's framework was modular designed according to the requirements analysis of the command system for cross-country skiing's training.This paper introduced the design scheme and implementation of each module based on the hardware platform.With the usage of the hardware,the data management system achieves the main functions like visual tracking region segmentation,collection,storage and processing of multi-source data,etc.In order to promote the scientific level of training further and overcome the shortcomings of the traditional training programs,we build a standardized model of the training field using calibration method.We use GPS location information to track the athletes dynamically based on the standardized model built previously.This paper introduced three approaches to implement video target tracking including camera preposition based method,space model based and calibration based method.Each method was implemented properly and tested strictly.We analyzed the advantages anddisadvantages of each method according to the result of the system tracking and put forward the corresponding solutions.After several experiments we solved the problems such as track lag,video sloshing and athletes centroid deviation,etc.The final experiment results show that the system can track better using calibration based method than others.The object always has the proper location and size in the video during the tracking process.In this way,the trainer can get a clear sight on athlete's skill which helps trainer supervise efficiently and athletes self-check.In one word,the command system for cross-country skiing's training helps trainer work efficiently and improve the training quality greatly.