نتایج جستجو برای: CCTV

تعداد نتایج: 868  

Journal: :Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention 2003
V Sivarajasingam J P Shepherd K Matthews

OBJECTIVE To evaluate the effect of closed circuit television (CCTV) surveillance on levels of assault injury and violence detection. DESIGN Intervention versus control study design. SETTING Five town/cities with CCTV surveillance and five, matched control centres without CCTV surveillance in England. INTERVENTION CCTV installation and surveillance. METHODS Assault related emergency dep...

2015
Sang-Ho Lee

This study aims to investigate the possibility of crime prevention through CCTV by analyzing the appropriateness of the CCTV location, whether it is installed in the hotspot of crime-prone areas, and exploring the crime prevention effect and transition effect. The real crime and CCTV locations of case city were converted into the spatial data by using GIS. The data was analyzed by hotspot analy...

2013
Huan-Ting Chen Si-Wei Wu Shang-Hsien Hsieh

Background: Nowadays, the use of Closed Circuit Television (CCTV) systems is effective for monitoring traffic, preventing crime, and ensuring safety in many public spaces. However, the effectiveness of CCTV coverage is often achieved through design experience and trial-and-error, instead of being evaluated and visualized using a robust approach. Methods: Firstly, a method for simulating varifoc...

2009
William Webster

This article presents a longitudinal review of CCTV policy in the UK. In particular, it reconsiders the diffusion of CCTV cameras and systems in public places in relation to the current commitment to the development of ‘evidence based’ public policy and services. In the case of CCTV this evidence is usually assumed to be reductions in crime and the fear of crime as measured by crime statistics....

Journal: :Expert Syst. Appl. 2009
Ming-Der Yang Tung-Ching Su

Several literatures presented automated systems for detecting or classifying sewer pipe defects based on morphological features of pipe defects. In those automated systems, however, the morphologies of the darker center or some uncertain objects on CCTV images are also segmented and become noises while morphology-based pipe defect segmentation is implemented. In this paper, the morphology-based...

2015
YoungWook Cha ChoonHee Kim

It is required to implement an integrated management as to the configuration, failure and power in order to stop the service of devices installed CCTV sites and minimize the on-site dispatch of maintenance staffs. This thesis defined RESTful web service based R4CSM-API (RESTful web service for CCTV Site Management-API) instead of SNMP that had some limitations for the purpose of implementing an...

Journal: :Information Polity 2009
C. William R. Webster

This article critically examines developments in CCTV (Closed Circuit Television) policy and provision in the UK, with specific reference to the ‘evidence-based’ approach to policymaking and service provision. The main features of the CCTV revolutions are examined from a policy perspective, so that intertwined changes in purpose and technological configuration are illuminated. The underlying pr...

1999
Rachel Armitage Graham Smyth Ken Pease

This study examines the effectiveness of a closed circuit television (CCTV) system installed in Burnley, Lancashire in northwest England. It considers both the outcomes and mechanisms through which they were brought about. Three areas are identified: "focal" beats, within which the CCTV cameras were installed; "displacement" beats, which were continuous to the focal beats; and "other" beats, co...

2010
Angela Sasse

I n TErMS OF sales, remote surveillance camera systems—commonly known as closed-circuit television (CCTV)—are a huge success story. Billons of dollars are spent on CCTV schemes by governments in developed countries each year, and sales to commercial companies and home users have been increasing, too. CCTV can be used for many purposes— ranging from monitoring traffic flows on highways, to allow...

2018
Eric L. Piza John Jay

This study measures the effect of CCTV in Newark, NJ across three separate crime categories: auto theft, theft from auto, and violent crime. CCTV viewsheds, denoting camera line-of-sight, were units of analysis. Viewsheds for treatment units were created by digitizing live CCTV footage within a geographic information system (GIS). Control viewsheds were created with GIS tools and aerial imagery...

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