Ubuntu18.04 安装OpenCV(带cuda 和 contrib)

为了使用opencv3中的 stitching_detailed.cpp 的 try_cuda 功能，需要将OpenCV带cuda重新编译。
最新整理：https://blog.youkuaiyun.com/chentianting/article/details/86610601

参考博客列表：

1.Ubuntu安装opencv 为调用gpu模块

https://www.cnblogs.com/beihaidao/p/6773595.html?utm_source=itdadao&utm_medium=referral
主要讲了如何得到 CUDA_ARCH_BIN，通过命令nvidia-smi，确定我的gpu是GeForce RTX 2080，对应的 CUDA_ARCH_BIN=7.5

2.使用Cmake编译opencv源码遇到如下错误

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
CUDA_nppi_LIBRARY (ADVANCED)