WU Zenghong, CHEN Yufen, WANG Yingjie. A Study on Adaptive Visual Threshold of E-map Symbols Based on E-Prime[J]. Journal of Image and Graphics, 2010, 15(4): 582. DOI: 10.11834/jig.20100407.
The standards of traditional paper map symbols are inapplicable for electronic maps in new display and perception environment. Experimental studies of E-map symbols based on screen visual perception
to make new adaptive standards
are of great importance for E-map standardization
data sharing
adaptive spatial information visualization
and geo-information collaborative visualization. This paper analyzes the various screen sizes and resolutions
and points out that adopting pixel as the unit and GDI+ technique is beneficial for quantificational and artistic symbol design. Its helpful for making the goal clear and enhancing the usability of the experiment that splitting the symbols into meta-graphs from the point of their visual perception and drawing. At last
the authors find out the visual threshold of meta-graphs through the experiments based on E-Prime
and combining with the basic E-map symbol design principles