Development of polygon shift method for generating 3D view map of buildings |
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| Authors: | Shunji Murai Vivarad Phonekeo Kunihiko Ono Shigetaka Yasue |
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| Abstract: | The authors have developed a new method termed “Polygon Shift Method” that enables the generation of a 3D view map of a city with tall buildings with a simplified procedure to shift a polygon and check the overlap between the original and shifted polygon. Boolean operations are applied with a newly defined “Fore or Aft” side and a “Depth Distance” that functionally express the visibility criteria or hidden point processing in the 3D view. Since the polygon shift method can be operated with a raster-based structure, the computer processing for generation of a 3D view map of buildings with shadow is simple and efficient. |
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| Keywords: | 3D view map polygon shift method shadow analysis hidden point algorithm |
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