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《Science of Surveying and Mapping》 2009-05
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A relief factor oriented illumination model

ZHANG Wei-wei,YOU Xiong,SONG Guo-ming(Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China)  
This paper analysised the strongpoints and shortcomings of Lambert light model and aspect-based shading in digital relief shading using experiment.The reason of experiment outcome was discussed.A new light model oriented slope,aspect and elevation was introduced.It made an experiment on this new light model using a pyramind model which slope increased with elevation and two kinds of DEM data which are differently in terrein characteristic with each other.It was concluded that this new light model could overcome effectively the drawbacks of Lambert model and aspect-based shading.
【CateGory Index】: TP391.41
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