A Robust and Efficient Method for Improving Accuracy of License Plate Characters Recognition
Abstract
License Plate Recognition (LPR) plays an important role on the traffic monitoring and parking management. A robust and efficient method for enhancing accuracy of license plate characters recognition based on K Nearest Neighbours (K-NN) classifier is presented in this paper. The system first prepares a contour form of the extracted character, then the angle and distance feature information about the character is extracted and finally K-NN classifier is used to character recognition. Angle and distance features of a character have been computed based on distribution of points on the bitmap image of character. In K-NN method, the Euclidean distance between testing point and reference points is calculated in order to find the k-nearest neighbours. We evaluated our method on the available dataset that contain 1200 sample. Using 70% samples for training, we tested our method on whole samples and obtained 99% correct recognition rate.Further, we achieved average 99.41% accuracy using three/strategy validation technique on 1200 dataset.
Keywords
Cite
@article{arxiv.1407.6705,
title = {A Robust and Efficient Method for Improving Accuracy of License Plate Characters Recognition},
author = {Reza Azad and Hamid Reza Shayegh and Hamed Amiri},
journal= {arXiv preprint arXiv:1407.6705},
year = {2014}
}
Comments
This paper has been withdrawn by the author due to a crucial sign error in equation 1 and some mistake