地理空间元数据可视化设计及关键技术研究

Design and research on key techniques of geospatial metadata visualization

依据信息可视化技术的特点,研究地理空间元数据单要素和多要素可视化方法;构建地理空间元数据可视化的设计流程和逻辑模型,分析影响可视化设计的主要因素及可视化技术的应用条件,并设计两个方面的交互方式;研究可视化实现的关键技术,包括数据的多层次组织和显示,基于空间特征的关联属性获取以及元数据的可视化映射。通过原型系统的实验,证明可视化模式的有效性。

First, combined with the techniques and characteristics of information visualization, single variate and multivariate geospatial metadata visualization are studied. Second, a design process and logical model is established of geospatial metadata visualization, and the main influence factors of visualization design and application of visualization technology are analyzed with two interact ways of designing. Then the key techniques of geospatial metadata visualization are studied, including multi-level organization and display of data, acquisition of associated attributes based on spatial features and visualization mapping of metadata. Finally through the experiment of prototype system, effectiveness of the visualization patterns is proved.