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http://dx.doi.org/10.7743/kisee.2015.14.2.037

A Study on the Estimation of CCTV Monitor Size for School Crime Prevention  

Park, Sung-chul (한국교육개발원)
Cho, Jin-il (한국교육개발원)
Jung, Tae-hwan (한국교육개발원)
Publication Information
The Journal of Sustainable Design and Educational Environment Research / v.14, no.2, 2015 , pp. 37-44 More about this Journal
Abstract
The purpose of this study is to propose the calculation model of CCTV monitor size for school. Literature review analyzed the concept and technical characteristics of CCTV system including equation of object size calculation. Case study showed that the sizes of CCTV monitors installed in the security offices of the six object schools were 19 inches on average. And the numbers of monitor screen partitions were at least 12 on average. Due to too many partitions in small monitors of approximately 19 inches, the faces of the objects of filming in each screen could not be properly identified. Experimental test presented that the vertical length of face image clearly recognized on the screen is at least 20mm. Based on the result, this paper developed the equation for calculating monitor size. Pilot test said that 27inch Monitor is needed for 4 screens. The practitioners of school districts and schools can make appropriate CCTV system environments considering the their own CCTV system conditions.
Keywords
School Safety; CCTV; Monitor Size; Crime Prevention Through Environmental Design;
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