The installation of Closed Circuit Television Cameras (CCTV) on British streets has been the crime prevention initiative of the century. However, little attention has been paid to who and what the cameras actually watch and how operators select their targets. This paper draws on a twoyear study in the operation of CCTV control rooms to examine how target selection is socially differentiated by ...

In this paper, we propose a city-logging system to collect various types of data around the roads using mobile observation equipment. Since the collected image data from CCTV contains several things which can violate someone’s privacy, we present a secure method to search CCTV image using searchable image encryption system. In addition, we illustrate a city-info service which can be provided by...

Detecting static structure deformed shape is very important to reduce properties and loss of human life. We can use a video camera to early catch emergence situations. Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place. We can get a sequence of images using CCTV and analyze the relationship between images in t...

As one of major underground pipelines, sewerage is an important infrastructure in any modern city. The most common problem occurring in sewerage is leaking, whose position and failure level is typically identified through closed circuit television (CCTV) inspection in order to facilitate rehabilitation process. This paper proposes a novel method of computer vision, morphological segmentation ba...

Although there is steady progress in sensor technology, imaging with a high dynamic range (HDR) is still difficult for motion imaging with high image quality. This paper presents our new approach for video acquisition with high dynamic range. The principle is based on optical attenuation of some of the pixels of an existing image sensor. This well-known method traditionally trades spatial resol...

In Surveillance Studies the terms ‘sousveillance’ and ‘inverse surveillance’ describe forms of surveillance that have a bottom-up and democratic character. However, in this paper this democratic notion is questioned by looking into practices and experiences with both Closed Circuit Television (CCTV) and mobile cameras by Dutch citizens. By intervening in the nightlife district of the Rotterdam1...

Colour information is not faithfully maintained by a CCTV imaging chain. Since colour can play an important role in identifying objects it is beneficial to be able to account accurately for changes to colour introduced by components in the chain. With this information it will be possible for law enforcement agencies and others to work back along the imaging chain to extract accurate colour info...

This article presents an experimental analysis of the combination of different regions of the human face on various forensic scenarios to generate scientific knowledge useful for the forensic experts. Three scenarios of interest at different distances are considered comparing mugshot and CCTV face images using MORPH and SC face databases. One of the main findings is that inner facial regions co...

Despite the widespread deployment of CCTV through most major cities and towns in great Britain, and the importance of surveillance to contemporary debates within the social sciences, there remains relatively little detailed research concerned with the practical use of these technologies in the workplace. In this paper, we examine how personnel in the operation rooms in London Underground use CC...