License plate recognition method and license plate recognition device
A license plate recognition and license plate technology, applied in the field of image recognition, can solve problems such as false detection and license plate recognition errors
Active Publication Date: 2018-09-14
SHENZHEN JIESHUN SCI & TECH IND
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Problems solved by technology
Dynamic false detection refers to moving objects, such as car engine vents, advertisements on the car body, etc. These objects occasionally appear, and because they are more similar to license plates, they will also cause certain false detections. If the license plate recognition equipment is used in express companies At entrances and exits, bus company parking lots and other places, because a large number of vehicles have advertisements and phone numbers, etc., it is easy to have a large number of false detections, resulting in errors in license plate recognition
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[0055] In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application. , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0056] Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0057] figure 1 It is a schematic flow chart of a license plate recognition method provided in this application.
[0058] Please refer to figure 1 As shown, the embodiment of the present application provides a license plate recognition method, which is applied ...
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This application disclosed a license plate recognition method and license plate recognition equipment. According to the car -free scene of the original license plate classifier detection site, collect the static negative samples of the site; add static negative samples to the original training concentration of the license plate recognition equipment to get the first firstTraining set, traine the first license plate classifier according to the first training set; according to the car scenario of the first license plate classifier detection site, collect the dynamic negative samples of the site, add dynamic negative samples to the first training concentration, get a second trainingCollection, trained the second license plate classifier according to the second training set, and carried out the license plate identification according to the second license plate classifier.In this way, the second license plate classifier using the second training collection can remove static negative samples and dynamic negative samples. At this time, most of the negative samples that may appear on the scene can be rejected by the second license plate classifier, so as to achieve the license platePrecise identification to reduce the misunderstanding rate of license plate recognition equipment.
Description
technical field [0001] The present application relates to the technical field of image recognition, in particular to a license plate recognition method and a license plate recognition device. Background technique [0002] In order to ensure good traffic order or social security, products such as license plate recognition equipment based on license plate recognition technology are widely used in intersections, property communities, commercial buildings and government agencies. License plate recognition technology is generally divided into three steps: license plate detection, character segmentation and recognition, and license plate voting. License plate detection, that is, detecting the license plate from the video and determining its position in each frame of the image, is a critical and time-consuming step in license plate recognition technology. [0003] At present, license plate recognition equipment is usually trained in the laboratory. Usually, there is only one lice...
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IPC IPC(8): G06K9/62G06K9/66
CPCG06F18/2411
Inventor 唐健李昕邹振宇李锐
Owner SHENZHEN JIESHUN SCI & TECH IND