Video Analytics is based on the sense of sight. Humans have at least four other senses. Today, two of these, hearing and smell, can be incorporated into a Smart City system to provide a more comprehensive capability.
Just as a person who cannot see or hear or smell is handicapped in some way, a Smart City system is limited if it cannot receive inputs for sound and smell.
The iOmniscient iQ-Smart City System uses all three senses to provide comprehensive intelligence about the events in the city. Video based analytics has already been discussed. This chapter focuses on Audio and Smell Analytics.
Audio Analytics - iQ-Ear
Cameras are the eyes of the system. They can see. The audio system uses a microphone to hear. Humans have a third significant sensor - the nose. There are some things that cannot be seen and may not be heard and for that iOmniscient provides the iQ-Nose system.
Gas leaks are an example of an incident that may not be seen or heard but can possibly be smelt. iQ-Nose can smell and detect a variety of gases at a distance of several hundred meters. If a new chemical has to be detected the system can be trained to smell it.
iQ-Nose can also detect the spraying of graffiti. If a spray can is being used to spray paint, the system will detect its presence at a distance of 50 meters (150 feet) or more.
The timely detection of gas leaks or the unusual accumulation of certain gases in a particular location can save lives. Hence, this is a very important capability in a Smart City.
The Analysis of Smell - iQ-Nose
Sometimes video is not sufficient to categorize an event. Analyzing sound may provide an additional dimension to the analysis. For instance, if a man is seen to fall down, it may be because he slipped and fell. However, if a gunshot is heard at the same time, it may indicate that the man has been shot.
The iOmniscient Audio Analytics system can analyze a sound. It can differentiate between glass breaking and a gunshot. It can tell if people are conversing normally or if some have raised their voices and are engaged in a vicious argument.
Often video alone cannot provide sufficient information to understand a situation. However, combined with an analysis of the sound, the operator may have a much better understanding of what is happening.
Most modern cameras also incorporate a small loudspeaker in them. Therefore, it is possible to play a recorded message. If for instance a person is standing too close to the edge of a railway platform, the system may advise the person to stand back from the line.
Such a system can also be manually operated. The officer in the command center can speak directly to an offender through the camera. Often people will refrain from suspicious activity if they realize that they are being watched and that their images are recorded. Talking to them directly may be the best way to let them know that you know.