Special specs aid 'eyes' to spot trouble

Special specs aid 'eyes' to spot trouble
Video feeds from existing CCTVs are analysed to detect abnormal crowd flow, identify faces and track people and vehicles.

SINGAPORE - Track the route being taken by a suspicious vehicle or monitor a potential troublemaker in a crowded area using live feeds from closed-circuit television (CCTV) cameras in Geylang.

That was among the tasks given to a consortium comprising security companies AGT International and O'Connor, as well as electronics giant Hitachi.

Developing a technique to analyse video feeds from CCTV cameras installed by different government agencies, however, required the team to examine video footage taken from 78 cameras.

The task of having enough eyes on Geylang was made harder because of the number of "lorongs" or lanes in the area, said AGT vice-president for sales and business development Danny Beh.

To supplement existing CCTV cameras, the team gave spectacles with a hidden camera to officers on the ground.

These helped relay footage of incidents in real time back to base, he said.

A facial recognition programme in the spectacles also helps officers on the ground to spot "persons of interest".

To help the police react faster to incidents, the team also wrote a software that triggers an alert when CCTV feeds show aggressive behaviour from a person in a crowd or if there is an abnormal traffic pattern forming in an area.

This article was first published on June 9, 2014.
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