earticle

영어

This study aimed to develop a scheming method suggesting CCTV camera positions. School is considered as a public space vulnerable to crimes including violence. The effort made simply by a certain group of user cannot control all crimes occurring at school. Crime prevention through environmental design known as CPTED is an effective way to improve crime safety in school. Enhancement of surveillance is one of the major strategies for achieving CPTED. This study suggested an algorithm to generate CCTV camera positions on the basis of evaluation of fitness. Fitness was obtained through the computation of four variables including normalized visit frequency, normalized visibility, number of nodes detected by CCTV cameras and number of CCTV cameras. A method searching proper CCTV camera positions was implemented at visual programming environment provided by Rhinoceros 3D, Grasshopper and Ironpython. The method using Genetic Algorithm for searching process can also provide the information regarding the spots and areas detected by CCTV cameras. The implemented method was applied to an elementary school floor plan. The simulation result presented CCTV camera positions, detected nodes and maximum fitness as per the number of CCTV cameras. It also showed the number of CCTV cameras maximizing the fitness.