一种快速有效的动态车辆牌照定位算法

A fast and efficient location algorithm of dynamic vehicle license plate

由于动态车辆图像往往在复杂的外界环境中得到,所以很多牌照分割方法都会失去作用。提出了一种基于字符竖向纹理特征的牌照定位算法,首先对动态车辆图像进行边缘检测和腐蚀等预处理,之后水平扫描边缘图像,得到整幅图像的跳变点分布,根据牌照字符的竖向纹理特征,确定牌照的可能区域,再结合牌照的几何结构特征,修正车牌的边界。实验结果表明算法有较强的适应能力,具有较高的实用性。

Because the dynamic vehicle images are usually captured in complicated environment,license plate location is difficult to realize. The author proposes a location algorithm based on the texture feature of license plate ,firstly,we use edge detection and erosion to deal with the initial image ,secondly, we horizontally scan the edge image to find hop points of the whole image ,finally,we locate license plate according to its unique texture and utilize the characters of geometric structure to correct the borderlines of license plate. The experimental results show that the algorithm is valuable and reliable in actual application.