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 Study sets new distance record for medical drone transport
13.09.2017 | Johns Hopkins Medicine

nachricht Researchers 'count cars' -- literally -- to find a better way to control heavy traffic
10.08.2017 | Florida Atlantic University

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: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Contacting the molecular world through graphene nanoribbons

19.02.2018 | Materials Sciences

When Proteins Shake Hands

19.02.2018 | Materials Sciences

Cells communicate in a dynamic code

19.02.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>