vgg_generated_120.i、boostdesc_bgm.i等文件

OpenCV3.4.5+opencv_contrib 解决在编译过程中出现C1083 Cannot open include file: 'vgg_generated_120.i': No such file or directory opencv_xfeatures2d的错误,从编译文件夹下的CMakeDownloadLog.txt文件里找到下载的路径,然后直接下载就可以了。之后放到opencv_contrib-3.4.5\modules\xfeatures2d\src,重新configure、generate。