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Backup camera view on the navigation screen of a Lexus IS 250 Backup camera on a Volkswagen Golf Mk7 hidden inside the logo. A backup camera (also called a reversing camera or rear-view camera) is a video camera specifically designed to be attached to the rear of a vehicle to aid in reversing and reduce the rear blind spot.
In most omniview systems, there are four wide-angle cameras: one in the front of the vehicle, one in the back of the vehicle, and one each in the side-mounted rear view mirrors. The four cameras have overlapping fields of view that collectively cover the whole area around the vehicle and serve as an omnidirectional (360-degree) camera.
RV-C is a communications protocol based on the Controller Area Network bus. The protocol is used in recreation vehicles to allow house and chassis components to communicate. RV-C is used for control, coordination, and diagnostics, in a multi-vendor environment.
[93] [94] [95] New York City's Domain Awareness System has 6,000 video surveillance cameras linked together, [96] there are over 4,000 cameras on the subway system (although nearly half of them do not work), [97] and two-thirds of large apartment and commercial buildings use video surveillance cameras.
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]