基于改进LoG算子的车牌定位识别系统实现

Implementation of license plate localization and identification system based on improved LoG operator

车牌定位在车牌识别系统中具有承上启下的地位,对是否能够正确识别车牌信息起到关键性的作用。针对利用传统边缘检测算子进行车牌定位的时间较长,精度低等局限性,提出一种改进型Lo G边缘检测算子。该算子克服传统Lo G算子在边缘检测时定位区域不够准确,识别时会产生双边缘等缺点。实验结果表明:改进型Lo G边缘检测算子比传统边缘检测算子正确定位车牌并识别的精度高,准确率达到95.03%,能够较快速进行车牌定位,提高车牌识别的精准率。

License plate localization has an important position in license plate identification system and plays a key role in License plate on whether the license plate can be correctly identified. It maybe takes a long time and has the limitation of low accuracy to use conventional edge detection operator to locate the license plate. Therefore,an improved Lo G edge detector is proposed. The operator is better than the traditional Lo G edge detection operator,overcoming the shortcomings of low accuracy in license plate localization and the double edge in plate identification. Test results show that the improved Lo G edge detection operator can locate the license plate more quickly and improve the accuracy of the license plate identification.