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《Science of Surveying and Mapping》 2013-05
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Dynamic visual model of spatio-temporal data spatial feature

ZHOU Ping;TANG Xin-ming;ZHANG Xiao;Satellite Surveying and Mapping Application Center,SBSM;School of Geomatic,Liaoning Technical University;  
The paper took the dynamic visualization expression of the continuous change process of the spatial characteristics of the multi-temporal geographical phenomena as the research object,based on the design principle of the frame-by-frame animation and shape tweening technology of Flash,proposed a dynamic visualization model for the spatial characteristics of spatial-temporal data which is driven by the event-time. In this research,a group of graph morphing algorithms which is suited for the spatial characteristics of the geographical entity including the point,line and polygon was designed. According to the proposed algorithms,enough "in-between"that represented the status of the spatial characteristics of the geographical phenomena at middle points among the "key-frame"could be generated by means of the interpolation method. By calculating the accurate time scale factor of the map animation,each of the"key-frame"and the"in-between"could be continuously played. Finally,this paper realized the animation effects of the dynamic visualization of the spatial characteristics on the media.
【Fund】: 国家科技支撑(2011BAB01B01)
【CateGory Index】: P208
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