SUPER SPEEDUP OF OMNIDIRECTIONAL VISIBILITY CALCULATION VIA INTERSECTION DETECTION USING GPGPU

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  • GPGPUを用いた交差判定式全方位可視率計算の超高速化
  • −Calculation of green visibility rate and its application for the examination of planting plan index−
  • −緑視率計算と植栽計画指標検討への応用−

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<p>Using GPGPU, we developed a method to calculate the solid angle of landscape elements with an omnidirectional field of vision, via intersection detection. We confirmed that the processing speed was approximately 500 times faster than the processing speed achieved using a single CPU. Furthermore, the developed method was applied for the calculation of the omnidirectional green visibility of models with randomly arranged trees. Thus, the relationship between the shape and number of trees and the omnidirectional green visibility was analyzed statistically. These results can be considered as an index of the green visibility rate when planning the arrangement of trees.</p>

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