A Uniform Sky Illumination Model to Enhance Shading of Terrain and Urban Areas

@article{Kennelly2006AUS,
  title={A Uniform Sky Illumination Model to Enhance Shading of Terrain and Urban Areas},
  author={P. Kennelly and A. J. Stewart},
  journal={Cartography and Geographic Information Science},
  year={2006},
  volume={33},
  pages={21 - 36}
}
  • P. Kennelly, A. J. Stewart
  • Published 2006
  • Geography
  • Cartography and Geographic Information Science
  • Users of geographic information systems (GIS) usually render terrain using a point light source defined by an illumination vector. A terrain shaded from a single point provides good perceptual cues to surface orientation. This type of hill shading, however, does not include any visual cues to the relative height of surface elements. We propose shading the terrain under uniform diffuse illumination, where light arrives equally from all directions of a theoretical sky surrounding the terrain… CONTINUE READING

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