Presentation on theme: "Simulation of traffic line and natural surveillance"— Presentation transcript:
1Simulation of traffic line and natural surveillance Team BIM Japan
2What is natural surveillance ? Natural surveillance means to secure urban areas against criminal offenders under observation by building occupants and passersby in natural way.Jacobs (1961) first referred to the effectiveness of natural surveillance.Crowe (1991) classified surveillance as three types; natural, organized, and mechanical. Natural surveillance is considered most important.Surveillance Classification（Crowe, 1991）MechanicalOrganizedNaturalReferencesJacobs, J. (1961） The Death and Life of Great American Cities. New York: Random House.Crowe, T.D. (1991） Crime Prevention Through Environmental Design: Applications of Architectural Design and Space Management Concepts. Boston: Butterworth-Heinemann.
3How to simulate natural surveillance ? Referring to Koike et al. (2008), we “Team BIM Japan” assumed that “level of natural surveillance (t)” can be defined as the amount of agents’ eye fixation at that time.Agents: agents of persons who exist within the allocated site (Area 6); such as public space users, residents, etc.We simulated traffic lines of agents with “building EXODUS” including traffic schedule of agents, and natural surveillance with “3ds MAX”.Agents’ eye fixation can be modeled as lightness in the space by using unidirectional lighting model in “3ds MAX”.Elements of agentsTraffic scheduleTimeStart pointEnd pointEye fixationRangeSightNatural SurveillanceEye fixation can be modeled by usingunidirectional lighting model in “3ds MAX”Simulation“level of natural surveillance (t)” can be definedas the amount of agents’ eye fixation at that time.ReferencesKoike et al. (2008) Development of the Models Showing the Extent of Natural Surveillance by Using Light Projecting Method, AIJ J. Technol. Des., Vol. 14, No. 27, , Jun., 2008.
4Conversion program (original) Data flowRevit ArchitectureDXFElements of agents(Traffic schedule)building EXODUSXMLTraffic lineConversion program (original)IFCTraffic lineRevit ArchitectureDWGTraffic lineElements of agents(Eye fixation)3ds MaxNatural surveillance