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复杂背景下的车牌定位和字符分割研究
Research of Vehicle License Plate Location and Character Segmentation Under Complex Scenes
查看参考文献6篇
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文摘
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提出了一种综合边缘检测、投影特征的车牌定位方法和基于垂直投影及模板匹配的字符分割方法,提取车牌灰度图像边缘,实验结果显示该算法检测边缘的速度快,车牌区域轮廓清晰,采用投影法确定车牌区域,用HOUGH变换检测倾斜角度进而对倾斜的车牌进行矫正,通过字符分割算法对车牌字符进行切割,有效地解决了复杂环境的干扰、车牌尺寸变化等问题.对不同背景下的光照车牌进行了大量实验,结果表明该算法能准确地进行车牌定位以及字符分割,具有较好的鲁棒性. |
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其他语种文摘
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An edge detection-projection feature based algorithm to locate the LP and a vertical projection-template matching algorithm to segment the characters are proposed. The edges are detected in a gray-level vehicle image, the result of experiment shows that the speed of detecting license plate is high and the obtained contour is very legible. The LP region is located by projection method, the tilt angle of LP is corrected by Hough transform. The character is segmented by LP segmentation algorithm, and some problems are solved effectively under complex scenes. To demonstrate the effectiveness of the proposed algorithm, it conducts extensive experiments over a large number of real-world vehicle license plates. It reports that the proposed algorithms have high accuracy and robustness. |
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来源
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计算机工程
,2007,33(4):198-200 【核心库】
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关键词
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车牌定位
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字符分割
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边缘检测
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车牌校正
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地址
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武汉理工大学自动化学院, 武汉, 430063
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3428 |
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学科
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自动化技术、计算机技术 |
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文献收藏号
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CSCD:2723084
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参考文献 共
6
共1页
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1.
Tyan J K. A Character Segmentation Algorithm for Recognition of Vehicle License Plate.
Proceedings of Part of the SPIE Conference on Mobile Robots XIV,1999:12-21
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被引
3
次
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2.
Kamat V. An Efficient Implementation of the Hough Transform for Detecting Vehicle License Plates Using DSP'S.
Proceedings of IEEE Real Time Technology and Applications Symposium,1995:58-59
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被引
2
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3.
李文举. 基于边缘颜色对的车牌定位新方法.
计算机学报,2004,27(2):204-208
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被引
41
次
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4.
Song Jiatao. Analysis and Extraction of Structure Features Alphabetic and Digital Characters on Vehicle License Plate.
Journal of Image and Graphics,2002,7(9):945-949
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被引
5
次
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5.
Kittler J. Threshold Selection on a Simple Image Static.
Computer Vision Graphics and Image Procession,1985,30(9):125-147
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被引
13
次
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6.
芮挺. 车牌识别中倾斜牌照的快速矫正算法.
计算机工程,2004,30(13):122-124
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被引
7
次
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