License Plate Recognition System Manufacturer - Tigerwong

License plate recognition system vehicle license plate in the image is an approximate rectangle or near berm parallelogram. Although the real vehicle license plate is a rectangle, the vehicle license plate in the image is an approximate rectangle or parallelogram due to the change of the height difference between the CCD camera and the captured vehicle license plate and the different camera angle. 02 the size of the license plate is relatively stable in the image. In practical application, if the images taken are the front image of the vehicle, the reduction ratio is relatively consistent because the front license plate of the vehicle generally has the same real size, and the distance between the CCD camera and the vehicle is relatively fixed. The size of the license plate in the captured image is also relatively stable. 03 car license plate tilts to a certain extent in the image, but the tilt angle is within a certain range. Due to the slight inclination of the real license plate on the vehicle and the shooting angle, the license plate may be inclined to a certain extent in the image. In practical application, as long as the angle and levelness of the camera are properly adjusted. The tilt angle can be controlled as small as possible. 04 the characters in the front license plate of the automobile have a uniform size and are arranged horizontally in rows. In the front license plate of the general license plate recognition system, 7 characters are arranged horizontally. The character set contains about 50 Chinese characters, 25 capital English letters and 10 Arabic numerals. The color of the license plate is divided into white characters on a black background, white characters on a prison background, black characters on a yellow background, red characters on a white background and other different specifications.