Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Intelligent surveillance increases public transport security

18.08.2004


Sophisticated tools used to survey and monitor passenger flows through busy metro stations may result in unmanageable data loads. ADVISOR’s decision support tools reduce the workload of operators and increase the utility of the data output.

ADVISOR, which stands for Annotated Digital Video for Intelligent Surveillance and Optimised Retrieval, “is a significant aid to the operators in charge of metro security,” says project coordinator Michael Naylor. “The principal of the [ADVISOR] system is to automate recognition, reporting and archiving of suspect or dangerous human behaviour captured from video surveillance cameras around metro stations to provide a better and safer service for passengers.”

Using cameras to detect human behaviours



“The system takes a live video feed provided from the metro network as input,” says Charles Attwood, technical consultant for Thales Research & Technology (UK). “First, a time-base corrector system assigns and aligns the timing on the video feeds. It then digitises the analogue signals, compresses them and sends them to the ‘crowd monitor’ system provided by Kingston University in the UK. This analyses the video provided and returns alarms based on movements related to crowd behaviour - overcrowding on station platforms, for example.

“Next, a motion detector, developed by INRIA of France, recognises and tracks individuals as they move about the metro system,” continues Attwood. “Data is then analysed by a behaviour recognition unit, which makes decisions based on the type of behaviour being perceived and raises alarms based on that data which it will send to the human-computer interface (HCI) designed by Vigitec in the control and command centre. The final unit is an archive server, provided by Bull, which stores the digitised and annotated video images and responds to requests from the HCI to either search for or retrieve particular sequences of video based on specified behaviours.”

The image processing is totally transparent to the operator. In detecting a scene of violence, for example, ADVISOR detects moving zones by computing the difference between each current image and the background image. It then computes the type of each moving region to identify individuals and groups of individuals. Once detected it follows them through the video sequence, drawing trajectories for each individual. Finally the system uses 3-dimensional spatio-temporal reasoning to recognise the behaviours pre-defined by security experts e.g. trajectories and size of the group and sudden accelerations of people within the group.

ADVISOR in tests on metro networks

The ADVISOR system was tested in real-life situations by the operators of the Barcelona and Brussels metro services. According to Daniel Huts, a Safety and Security Control Officer at STIB’s control centre in Belgium, ADVISOR offers a supplementary aid to the operators: “We currently have 800 video cameras in Brussels filming throughout the metro network, and it is hard for one human being to manage so many of them. When an alarm occurs the relevant camera view takes over the screen, but the decision to intervene in the situation is left to the controller, giving him control of the situation.”

At the beginning of the project, the metro operators were asked to describe their needs in terms of the desired alarms. The following situations were used in design: overcrowding, access blocking, the detection of ticket barrier jumping, vandalism, and scenes of violence such as fights and muggings.

Archiving and searching video footage

Apart from just recognising behaviours and provided users with alarms, ADVISOR is also a complete archiving tool for managing video sequences. The operator can search the video database by alarm type, place, and time. And, the operator can save an image frozen on the screen in an open format to be used by other programmes or to be transmitted to authorities. This process could be used, for example, to report an act of vandalism to the police.

After three years of research the ADVISOR project has demonstrated the feasibility of automating human behaviour recognition. After several days of real-life tests on the metro networks the operators were very positive about the ADVISOR system. The evolution of the prototype has reached a stage where it can start to be included in operational systems.

“At this stage the technology works best with fixed cameras so it’s easy to envisage the system in a range of other applications from car parks to shopping centres. Imagine a situation where a security guard could be visible to the public as they patrol a location and via a wireless device could be alerted to, view and respond to incidents ‘on the ground’ rather then sitting in a distant control room.” As Naylor concludes: “The system has huge potential for commercialisation.”

Tara Morris | alfa
Further information:
http://istresults.cordis.lu/

More articles from Transportation and Logistics:

nachricht New players, standardization and digitalization for more rail freight transport
16.07.2018 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

nachricht A helping (Sens)Hand
11.04.2018 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO

All articles from Transportation and Logistics >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Data use draining your battery? Tiny device to speed up memory while also saving power

The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.

Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Data use draining your battery? Tiny device to speed up memory while also saving power

14.12.2018 | Power and Electrical Engineering

Tangled magnetic fields power cosmic particle accelerators

14.12.2018 | Physics and Astronomy

In search of missing worlds, Hubble finds a fast evaporating exoplanet

14.12.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>