| 基于改进差分边缘检测法的车牌字符二值化算法 |
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| 引用本文： | 吴炜,薛磊,杨晓敏,陈默,何小海.基于改进差分边缘检测法的车牌字符二值化算法[J].四川大学学报(自然科学版),2006,43(6):1253-1258. |
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| 作者姓名： | 吴炜 薛磊 杨晓敏 陈默 何小海 |
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| 作者单位： | 四川大学电子信息学院图象信息研究所,成都,610064 |
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| 摘 要： | 针对车牌字符光照和污损的复杂特征,对车牌图象的二值化算法进行了深入的分析和研究,提出了一种基于差分边缘检测算法的改进图象二值化算法.实验结果表明,改进算法能够有效地将字符清晰地从背景中分割出来,分割速度快并且有助于提高字符识别的正确率.
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| 关 键 词： | 图象分割 阈值 二值化 差分边缘检测 |
| 文章编号： | 0490-6756（2006）06-1253-06 |
| 收稿时间： | 2006-01-12 |
| 修稿时间： | 2006-01-12 |
A Binarization Algorithm of Licence Plate Recognition Based on Improved LLT |
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| WU Wei,XUE Lei,YANG Xiao-min,CHEN Mo,HE Xiao-hai.A Binarization Algorithm of Licence Plate Recognition Based on Improved LLT[J].Journal of Sichuan University (Natural Science Edition),2006,43(6):1253-1258. |
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| Authors: | WU Wei XUE Lei YANG Xiao-min CHEN Mo HE Xiao-hai |
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| Affiliation: | College of Electronics and Information; Sichuan University,College of Electronics and Information; Sichuan University,College of Electronics and Information; Sichuan University,College of Electronics and Information; Sichuan University,College of Electronics and Information; Sichuan University |
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| Abstract: | According to the characteristic of license plate with complicated-background image,a new binarization algorithm based on improved LLT is presented here.Compared with other binarization methods,the result shows that this algorithm can make the character segmented from the background distinctly,effectively approve the speed and accuracy of vehicle license plate recognition |
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| Keywords: | image segmentation threshold binarization difference edge dection |
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