基于阈值分割和区域生长的车牌识别方法

摘要

Objective]To improve the effect of vehicle license plate location algorithm,and the accuracy and efficiency of vehicle license plate recognition algorithm.[Methods]Threshold segmentation and region growing algorithm were combined to locate the vehicle license plate area.Vertical projection algorithm was used to split the plate characters.Template matc-hing algorithm was used to recognize the plate characters.[Results]Experimental results show that the accuracy and speed of license plate numbers recognition are both improved through our method.[Conclusion]The accuracy and real-time of vehicle license plate recognition method based on threshold segmentation and region growing shows its practical value.%【目的】改善车牌定位的质量，提高车牌识别的正确率和效率。【方法】联合使用阈值分割和区域生长算法进行车牌定位，使用垂直投影法进行字符分割，并使用字符模板匹配方法实现车牌字符的识别。【结果】基于阈值分割与区域生长的车牌识别方法能准确地识别出车牌号，识别率高，运行速度快。【结论】该方法实时性较好，具有一定的实用价值。