OpenCV Installation with CUDA in Ubuntu

install_opencv_cuda.sh

sudo apt-get update
sudo apt-get upgrade

# Installation prerequisite libraries
## Compile tools
sudo apt-get install build-essential cmake pkg-config unzip git checkinstall
## Image I/O
sudo apt-get install libjpeg-dev libpng-dev libtiff-dev
## Video/Audio
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libxvidcore-dev libx264-dev 
## Camera API
sudo apt-get install libv4l-dev v4l-utils
## Optimization
sudo apt-get install libatlas-base-dev

# Compile OpenCV 4.5.0 from source
## Get source code
cd ~/Downloads/
wget -O opencv.zip https://github.com/opencv/opencv/archive/4.5.0.zip
wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.5.0.zip

unzip opencv.zip
unzip opencv_contrib.zip
mv opencv-4.5.0 opencv
mv opencv_contrib-4.5.0 opencv_contrib

mkdir -p opencv/build/ && cd opencv/build

## cmake with your configuration
cmake -D CMAKE_BUILD_TYPE=RELEASE \
      -D CMAKE_INSTALL_PREFIX=/usr/local \
      -D INSTALL_PYTHON_EXAMPLES=OFF \
      -D INSTALL_C_EXAMPLES=OFF \
      -D BUILD_opencv_python3=ON \
      -D WITH_CUDA=ON \
      -D WITH_CUDNN=ON \
      -D OPENCV_DNN_CUDA=ON \
      -D ENABLE_FAST_MATH=1 \
      -D CUDA_FAST_MATH=1 \
      -D CUDA_ARCH_BIN=7.0 \
      -D WITH_CUBLAS=1 \
      -D OPENCV_ENABLE_NONFREE=ON \
      -D OPENCV_GENERATE_PKGCONFIG=ON \
      -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
      -D BUILD_EXAMPLES=OFF ..

## Start compiling
## (8 corresponding to number of cpu thread you want to use)  
make -j8
## Install
sudo make install