The impact of CCTV on fundamental rights and crime prevention strategies: The case of the Catalan Control Commission of Video surveillance Devices

Many authors have written about issues related to privacy, legitimacy and efficiency in relation to CCTV systems in public space as a crime prevention strategy. Some have approached them separately; others have tried to come up with more comprehensive approaches. Few, however, have dealt with how such concerns have been put into practice by those who have to decide on the uptake of CCTV. This article considers some reflections on efficacy, legitimacy and privacy in relation to CCTV, as an introduction to the case of how the members of the Control Commission of Video surveillance Devices in Catalonia took these issues into consideration and interpreted the Law when deciding whether to approve a petition submitted by the City Council to install three cameras in Barcelona’s public space in 2003. It concludes by drawing some conclusions from the process, as a way to highlight the complexity of the policy process around surveillance in open, public spaces.     

From the Dockyards to the Disney Store: Surveillance,Risk and Security in Liverpool City Centre

This paper critically examines security provision and policing in Liverpool through analysing the development and consolidation of CCTV cameras in the city centre. The paper is less concerned with the technical question surrounding the relationship between CCTV and conventional crime control. Rather it is more concerned with placing the cameras within a broader economic, political and ideological context. In doing so it seeks to explore how the aim of creating a 'safe' and 'secure' city environment through defensible spaces has brought together the local authority, local businesses and public and private police who are involved with developing formal and informal security networks. An examination of the establishment and operation of CCTV in Liverpool city centre illustrates these themes and raises a series of important political and sociological questions regarding the operationalisation of power, the definitions of security, risk and order that underpin the camera network, the new sites of regulation and surveillance that are emerging as a result of the consolidation of the cameras particularly in relation to the militarization of city life and the intensification in the definition of public space as a site for consumptive purposes. The paper concludes with a consideration of the consequences of these developments in relation to recent debates about democratic accountability and the state of British politics.     

Tough on Crime,Tough on Civil Liberties: Some Negative Aspects of Britain's Wholesale Adoption of CCTV Surveillance During the 1990s

This paper begins by charting the remarkable rate of growth of public space closed circuit television (CCTV) surveillance in Britain during the 1990s, and proceeds to discuss the reasons for that growth. During the course of this discussion, a diverse range of problems associated with the expansion and use of CCTV in public places is identified. Thereafter, the paper concentrates on issues relevant to civil liberties.It considers the relationship between CCTV,fear of crime and concern for civil liberties by examining the findings of British public attitudes surveys which have focused on public space CCTV.Public concerns regarding the implications of CCTV for civil liberties which are common to those surveys are identified. The paper then examines the available evidence relating to those concerns. It is contended that the evidence uncovered and discussed in this paper substantiates the public's concerns regarding CCTV's threat to civil liberties. The paper concludes by calling for the statutory regulation of public space CCTV systems, on the ground that some of the uses to which they and their videotape evidence are being put infringe the civil liberties of many individuals and in particular, of members of certain social and minority groups.     

Estimating the impact of an integrated CCTV program on crime

Journal of Experimental Criminology - Prior research has identified that CCTV cameras play some role in deterring crime in public places. However, increasingly, CCTV surveillance is being...     

Efficient height measurement method of surveillance camera image

As surveillance cameras are increasingly installed, their films are often submitted as evidence of crime, but very scant detailed information such as features and clothes is obtained due to the limited camera performance. Height, however, is relatively not significantly influenced by the camera performance. This paper studied the height measurement method using images from a CCTV. The information on the height was obtained via photogrammetry, including the reference points in the photographed area and the calculation of the relationship between a 3D space and a 2D image through linear and nonlinear calibration. Using this correlation, this paper suggested the height measurement method, which projects a 3D virtual ruler onto the image. This method has been proven to offer more stable values within the range of data convergence than those of other existing methods.     

Regulating CCTV?: We Can’t Solve Problems by Using the Same Kind of Thinking We Used When We Created Them

This paper considers the lack of a universal CCTV policy across the United Kingdom and Europe and how this apparent omission is being addressed in the context of increased surveillance, and the omnipresence of CCTV in particular. Special attention is paid to the role of academics within the apparently long, drawn-out process of a current move from fragmented to collective regulation. What it seems exists is individual, independent policy that implicates wider legislation. What it seems is desired is a more comprehensive and codified decree. Starting with the issues that underpin CCTV and surveillance in general, this paper acknowledges the opposing arguments that CCTV can be helpful to policing as those that demonstrate how well it can facilitate a means of social control. The paper moves to consider the possibility of a ‘surveillance policy’ applicable and effective for CCTV’s balanced regulation, and discusses the means by which this might be realised, paying special attention to who is involved and to what extent, especially where this involves academic input. Academic input to date is problematized on one hand on account of its arguably narrow scope (source/personnel) and the trends yet ostensible wavering it entails on the other. Therefore, the author’s reservations around the place of academics in the process, especially because they appear to be key to developments, whilst variously demonstrating both influential flippancy and seriousness, lead to the conclusion that there is difficulty with trying to solve the ‘problem’ with the same thinking that created it.     

Public Area CCTV and Crime Prevention: An Updated Systematic Review and Meta‐Analysis

In recent years, there has been a marked and sustained growth in the use of closed circuit television (CCTV) surveillance cameras to prevent crime in public places in the USA and other Western nations. Amidst this expansion and the associated public expenditure, as well as concerns about their efficacy and social costs, there is an increasing need for an evidence‐based approach to inform CCTV policy and practice. This paper reports on an updated systematic review and meta‐analysis of the effects of CCTV on crime in public places. Evaluations were included if CCTV was the main intervention and the design was of high methodological quality. Forty‐four evaluations met the inclusion criteria. The results suggest that CCTV caused a modest (16%) but significant decrease in crime in experimental areas compared with control areas. This overall result was largely driven by the effectiveness of CCTV schemes in car parks, which caused a 51% decrease in crime. Schemes in most other public settings had small and nonsignificant effects on crime: a 7% decrease in city and town centers and in public housing communities. Public transport schemes had greater effects (a 23% decrease overall), but these were still nonsignificant. Schemes evaluated in the UK were more effective than schemes evaluated in the USA and other countries, but this was largely driven by the studies in the car parks. Implications for policy and research are discussed.     

Police-monitored CCTV cameras in Newark, NJ: A quasi-experimental test of crime deterrence

We present a test of the crime-deterrent effect of police-monitored street-viewing CCTV cameras using viewsheds of areas that were visible by cameras via direct line-of-sight and that were digitized using easily replicable methods, Google Maps, and standard GIS tools. A quasi-experimental research design, using camera installation sites and randomly selected control sites, assessed the impact of CCTV on the crimes of shootings, auto thefts, and thefts from autos in Newark, NJ, for 13 months before and after camera installation dates. Strategically-placed cameras were not any different from randomly-placed cameras at deterring crime within their viewsheds; there were statistically significant reductions in auto thefts within viewsheds after camera installations; there were significant improvements to location quotient values for shootings and auto thefts after camera installations. There was no significant displacement and there was a small diffusion of benefits, which was greater for auto thefts than shootings. The system of cameras in Newark is not as efficient as it could be at deterring certain street crimes; some camera locations are significantly more effective than others. Results of a system-wide evaluation of CCTV cameras should not be the only basis for endorsing or contesting the use of CCTV cameras for crime control or prevention within a city. Future research should test whether the effectiveness of CCTV cameras are dependent upon the micro-level attributes of environments within which they are installed.     

The Crime Reduction Effects of Public CCTV Cameras: A Multi‐Method Spatial Approach

Public Closed Circuit TeleVision (CCTV) initiatives have been utilized as methods of monitoring public space for over two decades. Evaluations of these efforts to reduce crime have been mixed. Furthermore, there has been a paucity of rigorous evaluations of cameras located in the USA. In this analysis, crime in the viewshed of publicly funded CCTV cameras in Philadelphia, PA, is examined using two evaluation techniques: hierarchical linear modeling and weighted displacement quotients. An analysis that incorporates controls for long‐term trends and seasonality finds that the introduction of cameras is associated with a 13% reduction in crime. The evaluation suggests that while there appears to be a general benefit to the cameras, there were as many sites that showed no benefit of camera presence as there were locations with a positive outcome on crime. The policy implications of these findings are discussed.     

A motion detection-based framework for improving image quality of CCTV security systems

Closed-circuit television (CCTV) security systems have been widely used in banks, convenience stores, and other facilities. They are useful to deter crime and depict criminal activity. However, CCTV cameras that provide an overview of a monitored region can be useful for criminal investigation but sometimes can also be used for object identification (e.g., vehicle numbers, persons, etc.). In this paper, we propose a framework for improving the image quality of CCTV security systems. This framework is based upon motion detection technology. There are two cameras in the framework: one camera (camera A) is fixed focus with a zoom lens for moving-object detection, and the other one (camera B) is variable focus with an auto-zoom lens to capture higher resolution images of the objects of interest. When camera A detects a moving object in the monitored area, camera B, driven by an auto-zoom focus control algorithm, will take a higher resolution image of the object of interest. Experimental results show that the proposed framework can improve the likelihood that images obtained from stationary unattended CCTV cameras are sufficient to enable law enforcement officials to identify suspects and other objects of interest.     

Automatic forensic face recognition from digital images.

Digital image evidence is now widely available from criminal investigations and surveillance operations, often captured by security and surveillance CCTV. This has resulted in a growing demand from law enforcement agencies for automatic person-recognition based on image data. In forensic science, a fundamental requirement for such automatic face recognition is to evaluate the weight that can justifiably be attached to this recognition evidence in a scientific framework. This paper describes a pilot study carried out by the Forensic Science Service (UK) which explores the use of digital facial images in forensic investigation. For the purpose of the experiment a specific software package was chosen (Image Metrics Optasia). The paper does not describe the techniques used by the software to reach its decision of probabilistic matches to facial images, but accepts the output of the software as though it were a 'black box'. In this way, the paper lays a foundation for how face recognition systems can be compared in a forensic framework. The aim of the paper is to explore how reliably and under what conditions digital facial images can be presented in evidence.     

IoT forensics: Exploiting log records from the DAHUA technology CCTV systems

CCTV surveillance systems are ubiquitous IoT appliances. Their forensic examination has proven critical for investigating crimes. DAHUA Technology is a well-known manufacturer of such products. Despite its global market share, research regarding digital forensics of DAHUA Technology CCTV systems is scarce and currently limited to extracting their video footage, overlooking the potential presence of valuable artifacts within their log records. These pieces of evidence remain unexploited by major commercial forensic software, yet they can hide vital information for an investigation. For instance, these log records document user actions, such as formatting the CCTV system's hard drive or disabling camera recording. This information can assist in attributing nefarious actions to specific users and hence can be invaluable for understanding the sequence of events related to incidents. Therefore, in this paper, several DAHUA Technology CCTV systems are thoroughly analyzed for these unexplored pieces of evidence, and their forensic value is presented.     

Citizen acceptance of police interventions: an example of CCTV surveillance in Las Vegas,Nevada

Efforts to install crime cameras in public are sometimes met with resistance from segments of the community who raise concerns over personal privacy. Drawing on an example from Las Vegas, NV, this paper explores community acceptance of CCTV cameras placed in a high-crime public location. In doing so, the paper applies a theoretical model that describes the mechanism by which private citizens accept interventions developed by police or other security officials. The paper analyzes specific privacy concerns raised by camera opponents and classifies the methods that police used to address those concerns and gain community support.     

Reverse engineering a CCTV system,a case study

Given a disk image of a CCTV system with a non-standard file system, how is the data interpreted? Work has been done in the past detailing the reverse engineering of proprietary file systems and on the process of recovering data from CCTV systems. However, if given a disk image without the CCTV system itself, or if under time constraints, the task becomes much more difficult. This paper explains a different approach to recovering the data and how to make sense of data on a CCTV disk. The method does not require extensive reverse engineering of the CCTV system, or even to have access to the CCTV system itself.     

Analyzing the Influence of Micro-Level Factors on CCTV Camera Effect

Objectives

Despite the popularity of closed circuit television (CCTV), evidence of its crime prevention capabilities is inconclusive. Research has largely reported CCTV effect as “mixed” without explaining this variance. The current study contributes to the literature by testing the influence of several micro-level factors on changes in crime levels within CCTV areas of Newark, NJ.

Methods

Viewsheds, denoting the line-of-sight of CCTV cameras, were units of analysis (N = 117). Location quotients, controlling for viewshed size and control-area crime incidence, measured changes in the levels of six crime categories, from the pre-installation period to the post-installation period. Ordinary least squares regression models tested the influence of specific micro-level factors—environmental features, camera line-of-sight, enforcement activity, and camera design—on each crime category.

Results

First, the influence of environmental features differed across crime categories, with specific environs being related to the reduction of certain crimes and the increase of others. Second, CCTV-generated enforcement was related to the reduction of overall crime, violent crime and theft-from-auto. Third, obstructions to CCTV line-of-sight caused by immovable objects were related to increased levels of auto theft and decreased levels of violent crime, theft from auto and robbery.

Conclusions

The findings suggest that CCTV operations should be designed in a manner that heightens their deterrent effect. Specifically, police should account for the presence of crime generators/attractors and ground-level obstructions when selecting camera sites, and design the operational strategy in a manner that generates maximum levels of enforcement.     

Towards a new generation of CCTV networks: Erosion of data protection safeguards?

CCTV networks are progressively being replaced by more flexible and adaptable video surveillance systems based on internet protocol (IP) technologies. The use of wireless IP systems allows for the emergence of flexible networks and for their customization, while at the same time video analytics is easing the retrieval of the most relevant information. These technological advances, however, bring with them threats of a new kind for fundamental freedoms that cannot always be properly assessed by current legal safeguards. This paper analyses the ability of current data protection laws in providing an adequate answer to these new risks.     

A partially randomized field experiment on the effect of an acoustic gunshot detection system on police incident reports

Journal of Experimental Criminology - To examine whether the introduction of an acoustic gunshot detection system (AGDS) allied to CCTV cameras increased the frequency of confirmed incidents of...     

The Value of CCTV Surveillance Cameras as an Investigative Tool: An Empirical Analysis

There has been extensive research on the value of closed-circuit television (CCTV) for preventing crime, but little on its value as an investigative tool. This study sought to establish how often CCTV provides useful evidence and how this is affected by circumstances, analysing 251,195 crimes recorded by British Transport Police that occurred on the British railway network between 2011 and 2015. CCTV was available to investigators in 45% of cases and judged to be useful in 29% (65% of cases in which it was available). Useful CCTV was associated with significantly increased chances of crimes being solved for all crime types except drugs/weapons possession and fraud. Images were more likely to be available for more-serious crimes, and less likely to be available for cases occurring at unknown times or in certain types of locations. Although this research was limited to offences on railways, it appears that CCTV is a powerful investigative tool for many types of crime. The usefulness of CCTV is limited by several factors, most notably the number of public areas not covered. Several recommendations for increasing the usefulness of CCTV are discussed.     

This is What a Police State Looks Like: Sousveillance, Direct Action and the Anti-corporate Globalization Movement

Activists across the globe have increasingly incorporated digital communication technologies into their repertoire of direct action tactics to challenge state and corporate power. Examining the anti-corporate globalization protests at the September 2009 Group of Twenty (G-20) meetings in Pittsburgh, this paper explores how activists used sousveillance and counter-surveillance as direct action tactics to make excessive force by police more visible to the public. Collaborative endeavors such as the G-20 Resistance Project, the Tin Can Comms Collective and independent media centers provided activists with the necessary tactical and strategic communication networks to coordinate direct actions during the G-20 protests. Through the use of surveillance technologies widely available to the public such as video cameras, cell phones and the internet, activists created an environment of permanent visibility in which the behaviors of police were subjected to public scrutiny. The images captured by anti-globalization activists raises a salient question: Is this what a police state looks like?