Build and Install OpenCV 4.5.3 on Raspberry Pi 3 with OpenCL, OpenGL and GStreamer Enable

After previously we are successfully building and installing OpenCL on Raspberry Pi 3 via PoCL and VC4CL. Now, we will try to build OpenCV 4.5.3 (latest version when this tutorial created) with OpenCL, OpenGL and GStreamer enable.

Prerequisites

• Build and Install OpenCL by referring this tutorial.

Build & Install OpenCL on Raspberry Pi 3

• Enable OpenGL by referring to this tutorial.

Enable OpenGL on Raspberry Pi 3

• Increase Swap file on Raspberry Pi by referring to this tutorial. I just setup into 2GB swap file.

Increasing the swap size on your Raspberry Pi

Download & Build OpenCV 4.5.3

• Create installation script with name build_opencv_4.5.3.sh and put the following script,

• Then execute that script with the following command,

cd ~
sudo chmod +x build_opencv_4.5.3.sh
./build_opencv_4.5.3.sh

• Build process will take several hours (~7 hour in Raspberry Pi 3) to complete,

• Above script will automatically installing dependency libraries, configuring OpenCV using cmake, building & installing.
• This is build configuration from my side,

• On above build configuration, we can see that OpenCV able to recognize OpenCL, OpenGL with Qt-4 backend, and GStreamer.
• It’s also come with OpenCV Python bindings in Python3,

Source :

• https://yunusmuhammad007.medium.com/build-and-install-opencv-4-5-3-on-jetson-nano-with-cuda-opencl-opengl-and-gstreamer-enable-6dc7141be272