结合PCA的尺度不变特征变换(SIFT)算法，有详细的注释，通过反复训练模板能有较高的识别率，matlab小波分析程序，车牌识别定位程序的部分功能，采用了小波去噪的思想。- Combined with PCA scale invariant feature transform (SIFT) algorithm, There are detailed notes, Through repeated training NxfdNSslate have higher recognition rate,