Optical camera electronic police
Advantages: simple and reliable system, low maintenance, low cost, long life, relatively clear license plate photos, simple control unit, good night photo effect using electronic flash, one camera can capture multiple lanes.
Disadvantages: the photos are in the form of film, the number of photos is small, the manual work of changing the film is large, the film and photos need to be developed, and the post-production cost is high, and the photos cannot be transmitted. Can't capture continuously.
Video electronic police camera
Pros: the camera is an industrial-grade product that can be captured continuously. The system consists of an industrial personal computer (or embedded computer)+ image card +I/O card. Photos can be transmitted and license plate recognition software can automatically identify the license number. Transition from standard definition camera to hd camera. Convenient for remote login and background maintenance.
Disadvantages: unable to recognize red lights in strong sunlight, weak evidence, LED light supplement, poor night photos, invalid photos. The failure to see red lights is a fatal problem for the system, which consists of multiple cameras, one for each lane and one for the panorama. In addition, the system is complex, poor reliability, large amount of maintenance, high cost, short life, difficult to install and debug, video electronic police are intersections ipc or embedded computer high temperature crash phenomenon.
Digital camera electronic police
Advantages: high photo pixel (4-10 million), clear photos, good night photo effect supplemented by electronic flash, a camera can capture multiple lanes, low cost, can best reflect the three elements of running a red light in a photo, red light, license plate, parking line is clear and convincing evidence. Photos can be downloaded at intersections, or can be wired or wireless transmission, using a fixed-focus digital camera program can be very good to adapt to the new requirements of electronic police, is a cheap program, strong persuasion, in line with the ministry of public security standards. With embedded computer control, the Linux operating system runs stably. Under the conditions of high temperature, high humidity and mechanical vibration, the system is stable and reliable. Fixed focus digital camera transformation is simple, good stability, low price, life of more than three years.
Cons: fixed-focus digital cameras can't snap continuously, while SLR digital cameras can snap continuously. But SLR digital cameras cost five to six times as much as fixed-focus ones. The life of an electronic flash is not as long as that of an LED refill light, which needs to be replaced frequently (2-3 months), but the refill effect of an electronic flash is the best.
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