车牌定位技术是车辆牌照识别系统和智能交通系统的关键技术之一,基于灰度图像的车牌定位算法,通过利用车牌的纹理特征,实现车牌定位。该算法就图像灰度化、灰度拉伸、二值化、边缘增强、水平及垂直投影定位的方法进行了详细阐述,并根据实验结果对算法的准确性进行了说明。 License plate location technology is one of the key technologies of vehicle license plate recognition system and intelligent transportation system. The license plate location algorithm based on grayscale image realizes license plate location by using the texture features of license plate. The algorithm elaborates the methods of image grayscale, grayscale stretching, binarization, edge enhancement, horizontal and vertical projection positioning. The accuracy of the algorithm is illustrated based on the experimental results.