Three dimensional Terrain modeling and display for environmental assessment

  • Authors:
  • K. Kaneda;F. Kato;E. Nakamae;T. Nishita;H. Tanaka;Takao Noguchi

  • Affiliations:
  • Hiroshima University, Saijo-cho, Higashi-hiroshima, 724 Japan;Hiroshima University, Saijo-cho, Higashi-hiroshima, 724 Japan;Hiroshima University, Saijo-cho, Higashi-hiroshima, 724 Japan;Fukuyama University, Higashimura-cho, Fukuyama, 729-02 Japan;Tokyo Electric Power Co., Inc., 1-4-10 Irifune, Chuou-ku, Tokyo, 100 Japan;Tokyo Electric Power Co., Inc., 1-4-10 Irifune, Chuou-ku, Tokyo, 100 Japan

  • Venue:
  • SIGGRAPH '89 Proceedings of the 16th annual conference on Computer graphics and interactive techniques
  • Year:
  • 1989

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Abstract

A technique for compositing computer generated images of buildings and background images created from aerial photographs is described. The aerial photo data are mapped onto a terrain model based on cartographic data. The technique can be used to pre-evaluate visual impact of large scale construction by means of not only still images but also animations.The technique can be briefly described as follows: 1) an accurate, three-dimensional terrain model is created based on cartographic data. 2) a hierarchy of aerial photo data at various resolutions is mapped onto the terrain model as a texture. 3) the height of trees is taken into account in regions near the viewpoint. 4) allowing intersections of terrain models with constructions facilitates geometric adjustments and shadowing.