Design and realization of global earth observation visualization system in Shanghai Expo
上海世博会全球对地观测三维可视化系统设计与实现*

This paper described the design and realization of the Global Earth Observation Visualization System (GEOVS) which was developed for the 2010 Shanghai World Expo. To take the geometric correction technology of the sphere screen as the key research, the GEOVS was first developed based on recent related research results in data analysis of CMA. In this system, the hardware and software platform of the sphere screen projection was developed and established, the image processing technology was achieved which could display dynamic screen including atmosphere, land, marine and other observations and simulated data, and also the seamless, standardized, world projected images was developed for this visualization system. The software system is based on windows platform, multi-threaded execution, and data processing background, combined with simple control interface, to achieve the image quickly on the sphere screen display without delay. The system can help people from the perspective of the image space about our planet and living environment.