Enable the Camera Interface

sudo raspi-config

 Test camera

 raspistill -o Desktop/image.jpg -w 500 -h 500

1.update raspbian and Increase the swap-size

sudo apt-get update && sudo apt-get upgrade && sudo rpi-update
sudo nano /etc/dphys-swapfile
#CONF_SWAPSIZE=100
CONF_SWAPSIZE=2048

2.Install tools and libraries for openCV

sudo apt-get install build-essential cmake pkg-config
sudo apt-get install libjpeg-dev libtiff5-dev libjasper-dev            libpng12-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev      libv4l-dev
sudo apt-get install libxvidcore-dev libx264-dev
sudo apt-get install libgtk2.0-dev libgtk-3-dev
sudo apt-get install libatlas-base-dev gfortran

 3.Get source code

wget -O opencv.zip https://github.com/opencv/opencv/archive/4.1.0.zip
      wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.1.0.zip
      unzip opencv.zip
      unzip opencv_contrib.zip

4.Compile openCV

cd ~/opencv-4.1.0/
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-4.1.0/modules \
-D BUILD_EXAMPLES=ON ..

5.Build and Install openCV

make -j4
sudo make install && sudo ldconfig

- Pi 3V3 to sensor VIN

- Pi GND to sensor GND

- Pi SCL to sensor SCL

- Pi SDA to sensor SDA

1.Python Installation of AMG88xx Library

sudo pip3 install adafruit-circuitpython-amg88xx

2.Open i2c interface from Pi

 sudo raspi-config

3.Interface Options--->I2C--->Enable 

sudo i2cdetect -y 1

1.Install wiringPi

sudo apt-get install git-core

sudo apt-get update

git clone git://git.drogon.net/wiringPi

cd wiringPi

./build

2.check

gpio -v

mkdir build

cd build
  
cmake ..
  
make
  
./face_detection