opencv安装问题

cmake failing with hash mismatch [closed] - OpenCV Q&A Forumhttps://answers.opencv.org/question/113942/cmake-failing-with-hash-mismatch/ubuntu18.04 安装opencv_contrib-3.2.0问题总结_das白的博客-优快云博客1.无法下载ippicv在https://github.com/opencv/opencv_3rdparty左上角下拉，选择下载相应版本的ippicv参考链接：https://blog.youkuaiyun.com/weixin_42203839/article/details/107684563 ippicv离线配置过程2.opencv_contrib中缺vgg_generated_48.i之类的文件，且无法下载参考链接：https://www.cnblogs.com/arxive/p/117787.https://blog.youkuaiyun.com/qq_38204686/article/details/116656374?spm=1001.2101.3001.6650.3&utm_medium=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromBaidu~Rate-3.pc_relevant_default&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromBaidu~Rate-3.pc_relevant_default&utm_relevant_index=6

带cuda版本：

ubuntu 18.04配置opencv3.4.5+contrib+cuda10.0_钦替的博客-优快云博客一：准备工作先配置好opencv3.4.5+contrib，这样，只需要在此基础上继续配置cuda就行，关于如何配置opencv-3.4.5+opencv-3.4.5_contrib可以看这篇博客：opencv-3.4.5+contrib然后就是下载cuda 10.0，下载地址：cuda10.0下载二 安装CUDA在你下载cuda的位置打开终端，并输入：sudo sh cuda_10....https://blog.youkuaiyun.com/weixin_45117253/article/details/103985646

undefined reference to `cv::cuda::SURF_CUDA::SURF_CUDA() 

OpenCV 3.3.0-r2 - surf_keypoint_matcher.cpp:53: undefined reference to `cv::cuda::SURF_CUDA::SURF_CUDA()' · Issue #9949 · opencv/opencv · GitHubSystem information (version) OpenCV = 3.3.0-r2 Operating System / Platform => Gentoo amd64 Compiler => gcc 6.4.0 Detailed description I am compiling the system with all contrib modules and CUDA support as per Gentoo enabled via USE flags...https://github.com/opencv/opencv/issues/9949