Abstract: This paper presents an effective license plate location algorithm, which employs wavelet transformation and intensity moment to extract number plate from the complex-background images. Noticing this characteristic that the wavelet analysis can save image details very well, this paper defines an intensity moment function to search locality of the license plate, which can extrude the differences of characters and other signals. The simulation result indicates that the method is potent.

Key words: wavelet analysis, intensity moment, vehicle license plate location, image segment

摘要： 提出一种基于小波分解和亮度矩的复杂背景下，图像中车牌定位和分割的方法。针对小波分解能较好地保留图像中的细节信息，为突出车牌字符和图像中其他信号特征的差异，定义了一个亮度矩函数，用于搜寻牌照的上下、左右边界。仿真结果表明，该方法定位准确率高、速度快。

关键词: 小波分解, 亮度矩, 车牌定位, 图像分割

CLC Number: 

• TP391