-time processing video frame.
Technical difficulties: (1) The diversity of the license plate's own characteristics and the uncertainty caused by the external environment are inaccurate; (2) The real-time is not satisfied by the high computational complexity of the image processing algorithm.
2.2 Key technologies and innovation points
Algorithm: a
caused by this averaging, we set a fixed threshold for the difference between the pixel value of the center point and its neighborhood mean, and only the point talent that is greater than the threshold value is replaced by the neighborhood mean, and the difference is not greater than the threshold value, the original value is retained, thus reducing the image blur caused by averaging.The Vehicle license plate
license plate frame
Because the location of the license plate positioning is not particularly accurate, then the siding of the license plate and the rivet will produce noise on the cha
is the detection of license plate in the entire image frame position. When a license plate is detected in an image, the partition of the license plate is given to the next step-the
is up to 99%, provides the SDK development package, two times the development is simple, the integration is convenient.
The vehicle license plate number, the license plate color accurate recognition, the recognition speed 0.5 seconds, the recognition rate is up to 99%, provides the SDK development package, two tim
ANPR (automatic number plate recognition) is divided in two main steps: plate detection and plate recognition. Plate detection has the purpose of detecting the location of the plate inWhole camera frame. When a
Road, and more. 10 . Supported invocation Routines:C #,DELPHI,VB,VC + + ,JAVA11 . Supported operating environments:Windows xp ,windows2000,windows2003, Windows7,linux. 12, Pure C writing, cross-platform application flexibility;Mobile Side The OCR software for license plate recognition has been successfully applied in many industries such as intelligent transportation system, entrance management system
License plate recognition is divided into two steps, one is the license plate extraction, but character recognition.Here is the license plate extraction.VS2010.OpenCV249.Load Image char * path = "D:\\picture\\06.jpg"; Iplimage *
Article moved to the Http://lanbing510.info/2014/12/18/License-Plate-Detection-Recognition.html,CSDN on the blog is not in maintenance, thank you.
The recent project needs, the license plate, the first probably done the next research:
The basic methods of detection are:
1 Using edge detection + Contour extractio
First, the preface
This article mainly uses the YOLO V2 to train own license plate picture data, and can frame the license plate area which exists in the test picture, also is the license plat
OpenALPR can be used as a License Plate Recognition System.GuideNetwork monitoring cameras have now become one of the most important security tools, but you may not have time to view what the cameras have captured, so that their functions will not be so great. There is an open-source software library called OpenALPR (Automatic License
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