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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:

期数:

2006年01期

页码:

99-101

栏目:

智能、算法、系统工程

出版日期:

1900-01-01

文章信息/Info

Title:

Distortion Rectification of Car Plate Image Based on Gauss Elimination Method

文章编号:

1005-3751（2006）01-0099-03

作者:

谢志鹏 陈锻生

华侨大学计算机科学系

Author(s):

XIE Zhi-peng; CHEN Duan-sheng

Computer Science Department, Huaqiao University

关键词:

双线性; 变形矫正; 高斯消元

Keywords:

bilinear;  distortion rectification ; Gauss elimination

分类号:

TN911.73

文献标志码:

A

摘要:

车辆牌照识别是智能交通系统的重要组成部分，而车牌图像的分割定位与字符提取是车牌识别系统的关键步骤，定位提取效果直接决定了车牌识别系统的工作效率。斜向拍摄的车牌图像存在着透视变形，该情况下直接进行车牌旋转不能有效地矫正，必须进行变形矫正才能准确地提取出各个牌照字符。文中利用双线性空间映射来矫正变形车牌图像，采用高斯消元法来计算该映射方程组的解，从而较好地解决了车牌透视变形的矫正问题，提高了车牌图像变形矫正的运算精度与速度

Abstract:

Car license plate recognition is the, important component of intelligent transportation system, the segmentation and location of car plate image and character extraction is the key procedure of this recognition system, the location and extraction effect immediately decide the efficiency of recognition system. Perspective distortion exists on the car license plate photograph taken in a skew angle, under such situation direct rotation can＇t effectively rectify the distorted plate image, hence the distortion rectification procedure is required to precisely extract the plate character. This paper uses bilinear space mapping to rectify the distorted ear plate image, applying Gauss elimination method to calculate the solution of mapping equations, thus resolve the problem of rectifying the perspective distortion of car plate, improve the precision rate and speed of distortion calibrating procedure

备注/Memo

备注/Memo:

谢志鹏（1972-），男，福建人，讲师，硕士，研究方向为图像图形、人工智能、模式识别与机器学习

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更新日期/Last Update: 1900-01-01