Abstract:

Spatio-temporal process visualization is the core of spatial-temporal data visualization. The spatio-temporal process is taken as the research objective. Considering comprehensively the elements of space-time visual variables, perceptual features, visual classification and representation and other elements, a visualization model of spatio-temporal process named as S-TProc_VisModel is proposed based on the analysis of spatio-temporal data and process. This model is divided into five parts and seven levels. Five parts include model input, visual variables, perceptual features, visualization form and model output. Seven levels include spatio-temporal data, spatio-temporal processes, visual variables, visual perception, visualization techniques, representations forms and visualization results. The model can not only effectively express the position and shape of spatio-temporal objects, but also display complex process and temporal changes in the event. It has been proved by experiments that the S-TProc_VisModel can fully display the contents of spatio-temporal process, and express events more vividly and concretely.

Key words: visual variables, perceptual features, visualization form, spatio-temporal process, visualization model

摘要：

时空过程可视化具有重要的研究价值与意义。以时空过程为目标，在分析时空数据分类与时空过程的基础上，综合考虑时空视觉变量、感知特征、可视化分类与表现形式等要素，提出时空过程可视化模型S-TProc_VisModel。该模型包含模型输入、视觉变量、视觉感知特征、时空过程可视化形式、模型输出五个部分，可以划分为时空数据、时空过程、视觉变量、视觉感知、可视化类型、表现形式、可视化成果七个层次。利用该模型不仅能有效表达时空要素的位置、形态，还能描述事件中的时空过程及时态变化。经实验证明，S-TProc_VisModel模型能够充分展示时空过程内容，并能形象完整地展示过程细节。

关键词: 视觉变量, 感知特征, 可视化形式, 时空过程, 可视化模型