New issue Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails. Already on GitHub? Sign in to your account Closed tmdgml-96 opened this issue Oct 16, 2020· 3 comments Comments
In this case, What's the meaning of xmin, ymin, xmax and ymax? Is that right? Or Is it wrong? xmin, ymin: coordinates of top left corner of the bounding box/rectangle. Note: The top-left most corner of the image starts from 1 and hence, both of them start from 1 and not 0. xmax, ymax: coordinates of the bottom right corner of the bounding box/rectangle Note: Maximum value of xmax is width of the image while maximum value of ymax is the height of the image. @utsavraj I solved it before. But thank you for the answer. I'll check again to see if the code I modified is correct. @tmdgml-96 @utsavraj Hello and sorry for opening the question. I just want to ask with this coordinate system, how were you able to recover the coordinates in real size of the image? thank you for helping me
License Plate Extraction and Recognition of Characters of a vehicle Using Sliding Window TechniqueS.Sudhanidhi *,G.Sreenivasulu ** *(Department of Electronics and Communication Engineering,S.V.U College of Engineering,Tirupati **(Department of Electronics and Communication Engineering,S.V.U College of Engineering,Tirupati ABSTRACT This paper represents a algorithm to detect license plate and character recognition with various sizes of license plate and different distances between camera and vehicle with different backgrounds . Obtaining license number of a vehicle is an important task in many applications like automatic toll payment and in security applications. In this vertical edges are detected and edge density is calculated. Edge density and integral edge image are used to filter out candidate region. License plate is recognized using character segmentation and character recognition. The efficiency is improved by using integral edge image.
A method for license plate detection and obtaining license plate number is presented in this paper. In this, the motion blur is removed by using wiener algorithm. Then the vertical edges are obtained by using sobel operator. Then the license plate is detected by using sliding window technique based on edge density and integral edge image. Finally, candidates are verified using geometrical and textural properties and license plate number is obtained. Fig 1.Input image Fig 2. After removing motion blur Fig 3.preprocessing Fig 4 Fig 5. Fig 4.&5 coarse window detection and fine window detection, edges of license plate. Fig 5.License plate number To test the ability to detect different license plates at different distances between camera and the vehicle, few images are taken and processed. TABLE.1
From this we say the accuracy is given for license plate extraction is 96.67% and for license plate recognition 90%.It is tabulated as below. TABLE.2
This table gives the comparison between the method [7] and the method proposed. REFERENCES
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