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A video sensor (also video-sensor or videosensors) describes a technique of digital image analysis. A video sensor is application software, which interprets images. Video sensors use programmable algorithms running on a computer.
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 objects are marked digitally. The operator can recall the digital marked images for further use.