Abstract
Visual variables are important factors for visualization in 2D maps, and the study of non-photorealistic visualization of 3D city models in virtual environments using visual variables is also necessary to represent the attributes of city such as energy consumption. This study proposed a set of visual variable mapping model based on 3D geographical environment and conducted user cognitive test. The goal of this research is to verify the applicability of visual variables in 3D space and explore the impact of disturbing visual variables on user cognition. The results show that visualization of compound visual variables in 3D space is more effective than single variable mapping, and it makes up for the shortcomings of single mapping. It is effective to study the visualization effect in three-dimensional geographical environment using virtual reality technology. The results from this case study provide guidance for 3D user-centric visualization technology and make contribute to the development of smart city.
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