An Effectively License Plate Localization Method
首发时间:2011-12-23
Abstract:Benefit from the lower cost and the easier installation, Intelligent Traffic system (ITS) based on high definition (HD) picture is increasingly used. In this paper, we describe a edge and color feature based method, which is able to locate and extract license plate from the high definition images in real-time. In the proposed algorithm, the edge feature is fully utilized to find the candidate region of the license plate (LP). And then, a edge identity similarity method is employed to adjust the position of each candidate, which can get the accurate LP position. Finally, an effective evaluation method is proposed to get the real LP from the candidate region. This thoroughly integrated system can obtain accurate localization of LP real-time in the HD traffic pictures under complicated background and changing illumination conditions. The experiment results indicate that the presented system is excellent in accuracy with a good speed.
keywords: color feature edge feature license plate localization
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一种高效的车牌定位算法
摘要:受益于更低的成本和易于安装,高清(HD)图片被越来越多地应用于智能交通系统(ITS)。本文描述了一种基于边缘和颜色特征的车 牌定位方法,这种方法能够准确并且快速的在高清图片中找到车牌。在该算法中,边缘特征被充分利用,找到车牌的候选区域 。然后,一个基于边缘特征的相似性方法被来调整每个候选区域的位置,它可以得到准确车牌位置。最后,一个有效的车牌评判方法被提出。为了使算法更鲁棒和更有效,颜色的特点被添加到上面的算发中。最后整个系统,可在复杂背景下的HD交通图片和不断变化的光照条件下准确定位车牌。实验结果表明,系统精度优良,具有良好的速度性能。
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