覆盖全球的气象信息在球体幕上进行显示具有很强的立体感和纵深感,在多个行业具有应用价值.基于中国气象局的气象资料,在国内首次研制了全球对地观测球体幕显示系统软件并能够稳定运行.本文主要介绍了系统的核心技术图像处理的实现.图像处理包括两个步骤:图像增强和图像变形.图像增强处理增强了包含大量气象信息的图像显示效果,图像变形处理通过几何校正,图像拼接等技术实现将备投图像从平面显示正确投影到球体幕上.经过系统图像处理后,覆盖全球的观测资料能在球体幕上正确、无缝、无变形、无失真显示,其利用模拟真实地球的球体屏幕,让观众从太空的角度直观形象地体验全球气象信息展示.%The meteorological information displaying on a spherical screen has a strong three-dimensional sense, and it has great application prospects in multiple industries. Based on the meteorological data of the China Meteorological Administration, the Global Earth Observation display system software is developed for the first time, and the system has put into operation and performs stably. The core technology of the system and the system design and implementation of image processing are described. Image processing includes two steps: image enhancement and image distortion. Image enhancement processing enhances the image display that contains a large amount of meteorological information. Through the geometric image distortion correction, the metrological data are projected onto a spherical screen. In this system, after image processing, global observational data can be displayed properly on the spherical screen in the manner of seamless and no distortion. The system can help people experience the planet and living environment from the perspective of the space.
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