A video sensor (also video-sensor or videosensors) describes a technique of digital image analysis. A video

sensor A sensor is a device that produces an output signal for the purpose of sensing a physical phenomenon. In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends ...

is application software, which interprets images. Video sensors use programmable algorithms running on a

computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...

. Video sensors are used to evaluate scenes recorded by a video camera. Objects and their characteristics (size and speed for example) are verified and compared to the pre-set examples or templates. When there is a match between object and model, then the frame and the

object Object may refer to: General meanings * Object (philosophy), a thing, being, or concept ** Object (abstract), an object which does not exist at any particular time or place ** Physical object, an identifiable collection of matter * Goal, an ai ...

s are marked digitally. The operator can recall the digital marked images for further use. Video sensors are mostly deployed with video surveillance (

CCTV Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly t ...

) systems. The commercial use of video sensors is increasing. Two main applications are electronic

security Security is protection from, or resilience against, potential harm (or other unwanted coercive change) caused by others, by restraining the freedom of others to act. Beneficiaries (technically referents) of security may be of persons and social ...

and market research.

References

Film and video technology {{graphics-software-stub