Build opencv (neu chua cai lib): (https://docs.opencv.org/master/d7/d9f/tutorial_linux_install.html)

sudo apt-get install build-essential

sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

cd ~

git clone https://github.com/opencv/opencv.git

cd ~/opencv

mkdir build && cd build

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..

make -j7

sudo make install

Detect face sử dụng model retinaface (best performent for edge device as pi, tablet)

cd <path/to/project>

mkdir build && cd build

cmake ..

make -j4

Run:

./retinaface/retinaface <path/to/image>