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These cameras draw more power than CMOS cameras but offer superior picture quality and better color replication. CMOS helmet cameras are based upon the complementary metal–oxide–semiconductor (CMOS) image sensor. They typically operate on 5 VDC and draw very little power. CMOS cameras are also generally smaller than the CCD type.
Extensive video surveillance systems were relegated to merely recording for possible forensic use to identify someone, after the fact of a theft, arson, attack or incident. Where wide angle camera views were employed, particularly for large outdoor areas, severe limitations were discovered even for this purpose due to insufficient resolution. [4]
The software aspect of the system runs on standard home computer hardware and can be linked to other applications or databases.It first uses a series of image manipulation techniques to detect, normalize and enhance the image of the number plate, and then optical character recognition (OCR) to extract the alphanumerics of the license plate.
Flock states its cameras and technology only captures data from vehicles, and the machine learning is specifically designed not to identify people. Flock has defended itself against "myths" about license plate readers. [52] Although Flock Safety claims their cameras reduce crime, opponents argue that there is no clear evidence for this. [53]
Gyrocam Systems has developed an extensive product line of camera systems that provide stabilized images from miles away, whether in air, on land, or at sea. [2] Since 2004, Gyrocam Systems has fielded well in excess of 500 mast-mounted vehicle camera systems to the U.S. military in both Iraq and Afghanistan.
Fixed camera systems can be housed in boxes, mounted on poles beside the road, or attached to gantries over the road, or to overpasses or bridges. Cameras can be concealed, for example in garbage bins. [40] Mobile speed cameras may be hand-held, tripod-mounted, or vehicle-mounted. In vehicle-mounted systems, detection equipment and cameras can ...
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