| 改进的Hough变换在校正汽车牌照倾斜中的应用 |
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| 引用本文： | 王良红,王锦玲,梁延华.改进的Hough变换在校正汽车牌照倾斜中的应用[J].信息与电子工程,2004,2(1):45-48. |
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| 作者姓名： | 王良红 王锦玲 梁延华 |
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| 作者单位： | 1. 解放军信息工程大学,信息工程学院,河南,郑州,450002
2. 郑州大学,系统科学与数学系,河南,郑州,450052 |
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| 摘 要： | 针对汽车牌照的自动识别中倾斜问题，对Hough变换提出了新的用法。首先，根据灰度确定汽车图像中车牌的位置和范围，取出包含车牌的子图像；然后对子图像中的点作二级Hough变换算法，计算出子图像中主要直线的角度，该角度被认为是车牌的倾斜角度；最后，用插值旋转的方法进行校正。仿真实验验证了本文算法的有效性。
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| 关 键 词： | 汽车牌照 倾斜校正 Hough变换 峰值扩散 自动识别技术 图像识别技术 |
| 文章编号： | 1672-2892(2004)01-0045-04 |
| 修稿时间： | 2003年10月31 |
Hough Transform and Its Application in Declining License Plate |
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| WANG Liang-hong,WANG Jin-ling,LIANG Yan-hua.Hough Transform and Its Application in Declining License Plate[J].information and electronic engineering,2004,2(1):45-48. |
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| Authors: | WANG Liang-hong WANG Jin-ling LIANG Yan-hua |
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| Affiliation: | WANG Liang-hong1,WANG Jin-ling2,LIANG Yan-hua1 |
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| Abstract: | A new usage of Hough Transform is introduced in this paper.Firstly,the position and scope of the license plate is located and the image that contains the license plate is picked up.Then, a two-stage Hough transform algorithm is applied to the image to calculate the angle of the main line.This angle is thought as the declining angle of the license plate.Lastly,the orientated image rectified using interpolation rotation method.This algorithm is validated through simulation tests. |
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| Keywords: | information processing technology declining rectification Hough Transform license plate diffuse of peak value |
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