Traditional Culture Encyclopedia - Photography and portraiture - License plate recognition camera recognition principle?
License plate recognition camera recognition principle?
Vehicle detection: We can use buried coil detection, infrared detection, radar detection technology, video detection and other ways to sense the passing of vehicles and trigger image capture.
Image acquisition: Real-time and uninterrupted recording and acquisition of passing vehicles through the high-definition camera capture host.
Pretreatment: noise filtering, automatic white balance, automatic exposure, gamma correction, edge enhancement, contrast adjustment, etc.
License plate location: scan the gray image after image preprocessing to determine the license plate area.
Character segmentation: after locating the license plate area in the image, accurately locate the character area through graying and binarization, and then segment the characters according to the character size characteristics.
Character recognition: the segmented characters are scaled and extracted, and matched with the standard character expressions in the character database template.
Result output: the result of license plate recognition is output in text format.
Reference: www.szjiuding.com/237.html
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