License plate image processing method and device and computer storage medium
A license plate image and processing method technology, which is applied in image data processing, computer parts, computing, etc., can solve problems such as the inability to meet the needs of license plate color recovery, and achieve the effect of improving the processing effect and accuracy.
Active Publication Date: 2020-08-25
ZHEJIANG DAHUA TECH CO LTD
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[0004] This application provides a license plate image processing method, device and computer storage medium to solve the problem that the prior art cannot meet the demand for license plate color restoration
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[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] In order to solve the problem that the existing technology cannot meet the needs of license plate color restoration, for the current green license plate of new energy vehicles, this kind of license plate image needs to be processed with color enhancement and color restoration to make it more in line with the real license plate and the visual effect of human eyes .
[0022] Therefore, the present application provides a license plate image pr...
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The invention discloses a license plate image processing method and device and a computer storage medium, and the method comprises the steps: obtaining a to-be-processed license plate image which at least comprises a license plate; calculating the inclination angle of the license plate based on the pixel data of the to-be-processed license plate image; creating a background color distribution diagram based on the license plate image to be processed, and rotating the background color distribution diagram according to the inclination angle of the license plate to obtain a rotating background color distribution diagram; and performing background fusion on the to-be-processed license plate image and the rotating background color distribution map to obtain a target license plate image. Throughthe method, the original color of the license plate in the license plate image can be recovered, and the license plate image processing effect and accuracy are improved.
Description
technical field [0001] The present application relates to the technical field of traffic monitoring, in particular to a license plate image processing method, device and computer storage medium. Background technique [0002] Currently, new energy vehicles use license plates with a green background, and the background color of the license plate gradually changes from green to white from bottom to top. In the traffic monitoring scene, when the license plate is captured, the relatively smooth surface of the license plate will reflect the strong light from the supplementary light, resulting in the position of the license plate in the image, the background color becomes lighter and lighter due to overexposure, and even the color information is lost And appear white. [0003] The existing license plate image processing technology can only enhance and optimize the color on the basis of the existing colors to improve the clarity of the image, but it cannot restore the color informa...
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IPC IPC(8): G06K9/32G06T5/00G06T5/50G06T7/90
CPCG06T7/90G06T5/50G06V10/242G06V20/625G06T5/70
Inventor 郝德军庄明磊王廷鸟刘晓沐
Owner ZHEJIANG DAHUA TECH CO LTD