Installing Opencv In Raspberry Pi

To install OpenCV on a Raspberry Pi, you can follow these steps:

Step 1: Update the Raspberry Pi

sudo apt update
sudo apt upgra

Step 2: Install Dependencies

sudo apt install build-essential cmake git pkg-config libjpeg-dev libtiff5-dev libjasper-dev libpng-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libgtk-3-dev libcanberra-gtk* libatlas-base-dev gfortran python3-dev

Step 3: Download OpenCV Source Code

cd ~git clone https://github.com/opencv/opencv.git
cd opencv
git checkout <version>  # Replace <version> with the desired version, e.g., 4.5.1

Step 4: Build OpenCV

mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \
-D ENABLE_NEON=ON \
-D ENABLE_VFPV3=ON \
-D BUILD_TESTS=OFF \
-D OPENCV_ENABLE_NONFREE=ON ..

Step 5: Compile OpenC

make -j4

Note: The `-j4` option is used to compile using four threads, which speeds up the compilation process. You can adjust this value according to the number of CPU cores available on your Raspberry Pi.

Step 6: Install OpenCV

sudo make install
sudo ldconfig

Step 7: Verify Installation

python3
import cv2
cv2.__version__

Running the above Python code should output the version of OpenCV you installed, indicating that the installation was successful.

That's it! You have now installed OpenCV on your Raspberry Pi. Remember to replace `<version>` in Step 3 with the desired version number, such as 4.5.1, or you can omit it to download the latest version from the repository.

Please note that the compilation process may take a while on a Raspberry Pi, so be patient.