基于LabVIEW图像法车牌智能识别系统

Intelligent Recognition System of Vehicle License Plate Based on LabVIEW Imaging Method

摘要:

车辆牌照自动识别是实现交通管理智能化的重要环节,设计中利用图像采集卡对经过的车辆车牌进行图像采集并传送至计算机,采用美国NI公司LabVIEW软件,实现图像预处理、图像去噪以及图像增强等功能;然后根据车牌颜色特征对其准确定位,采用阈值法分割车牌字符；最后由OCR函数来识别字符,识别结果保存至相应数据中,可以进行相应的违章、违规智能交通管理,经实验该系统成功实现车牌识别识别率达99%。

Abstract:

The vehicle license plate automatic recognition is an important part in intelligent traffic management, the design through the use of image acquisition card for vehicle license plate image capture and transfer to the computer, using the LabVIEW software, image pre-processing, image denoising and image enhancement functions. Then according to their license plate color features accurate positioning, the use of license plate character segmentation threshold method, and finally by the OCR function to recognize the characters, identification results are stored to the corresponding database, you can make the appropriate regulations, violations of intelligent traffic management, the experiment shows the vehicle license plate recognition rate is up to 99%.