A METHODOLOGY FOR EVALUATION OF THE LEVEL OF NATURAL SURVEILLANCE AT ELEMENTARY SCHOOLS

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  • FUJII Takeshi
    Research Assoc., Department of Architecture and Urban Design, Ritsumeikan University, M. Eng.
  • YAMADA Satoshi
    Assistant Prof., Department of Architecture and Urban Design, Ritsumeikan University, Dr. Eng.
  • KUBOZONO Shoji
    Undergraduate, Department of Architecture and Urban Design, Ritsumeikan University
  • MUNEMOTO Shinsaku
    Assoc. Prof., Department of Architecture and Urban Design, Ritsumeikan University, Dr. Eng.
  • OIKAWA Kiyoaki
    Prof., Department of Architecture and Urban Design, Ritsumeikan University, Dr. Eng.

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Other Title
  • 小学校の自然監視性の評価手法
  • -Measurement of three dimensional visibility of windows using CG models and their potential applications-
  • -ＣＧモデルによる窓の立体的な可視量の計量方法とその応用可能性-

Abstract

This paper proposes a methodology for evaluating the extent of visual surveillance possible on elementary schools grounds by measuring the level of three-dimensional visibility of school building windows.<br>A method of measurement using CG models was developed that takes the distance, the angle of the line of sight and effects caused by trees and surrounding buildings into consideration. The level of ‘natural’ surveillance was then evaluated at five elementary schools and results were assessed comparatively. In conclusion, the proposed evaluation method was found to be a useful tool in developing crime prevention plans for elementary schools.

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