›› 2010, Vol. 23 ›› Issue (11): 5-7.

• 论文 • 上一篇    下一篇

一种基于图像处理和投影的车牌定位方法

冯慧娜,白艳萍,胡红萍   

  1. (中北大学 理学院,山西 太原 030051)
  • 出版日期:2010-11-15 发布日期:2010-12-23
  • 作者简介:冯慧娜(1986-),女,硕士研究生。研究方向:模式识别。
  • 基金资助:

    国家自然科学基金资助项目(60876077);山西省自然科学基金资助项目(2009011018-3)

A Vehicle Plate Location Method Based on Digital Image Processing and Projection

 FENG Hui-Na, BAI Yan-Ping, HU Hong-Ping   

  1. (College of Science,North University of China,Taiyuan 030051,China)
  • Online:2010-11-15 Published:2010-12-23

摘要:

为了提高车牌的定位率和准确性,通过对车牌特征的研究,提出一种采用颜色特征、图像处理和投影结合的定位方法。首先利用车牌的颜色特征将车牌可能区域从整幅图像中确定,再利用水平移差扫描,边缘检测对图像进行处理,并利用投影以及车牌的长宽比例相结合的方法,确定车牌具体位置。结果表明,此方法对蓝底白字车牌定位较准确,并且具有一定的鲁棒性和实时性。

关键词: 车牌定位, 水平移差, 边缘检测

Abstract:

An algorithm for license plate 1ocation based on the color characteristics,digital image processing and projection is proposed in order to improve the rate and accuracy of the positioning plate.First,the possible scope of the plates can be defined from hole images by using the color characteristics,and then horizontal difference and edge detection are used to process the image,and finally projection and the ratio of the length and width can be used to determine the specific location of the license plate.Experimental results show that the method apply to the blue license plate,and has good robustness and real-timeness.

Key words: license plate location;horizontal difference;edge detection

中图分类号: 

  • TP391.4