https://github.com/tes3awy/opencv-3.2.0-compiling-on-raspberry-pi

Download, Compile, Build, and Install OpenCV 3.2.0 with Extra Modules on RPI running Raspberry Pi OS
https://github.com/tes3awy/opencv-3.2.0-compiling-on-raspberry-pi

opencv opencv-contrib opencv-contrib-python opencv-python opencv3 python python2 raspberry-pi raspberry-pi-3 raspberry-pi-camera raspberry-pi-os raspbian raspbian-os rpi swap-service swapfile

Last synced: 4 months ago
JSON representation

Download, Compile, Build, and Install OpenCV 3.2.0 with Extra Modules on RPI running Raspberry Pi OS

• Host: GitHub
• URL: https://github.com/tes3awy/opencv-3.2.0-compiling-on-raspberry-pi
• Owner: Tes3awy
• License: agpl-3.0
• Created: 2016-05-26T15:07:47.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2021-01-01T21:51:02.000Z (over 4 years ago)
• Last Synced: 2025-02-01T12:44:10.831Z (5 months ago)
• Topics: opencv, opencv-contrib, opencv-contrib-python, opencv-python, opencv3, python, python2, raspberry-pi, raspberry-pi-3, raspberry-pi-camera, raspberry-pi-os, raspbian, raspbian-os, rpi, swap-service, swapfile
• Homepage:
• Size: 439 KB
• Stars: 70
• Watchers: 15
• Forks: 36
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Compile OpenCV 3.2.0 + OpenCV Contrib for Python on Raspberry Pi

> I assume you have downloaded [Raspberry Pi OS](https://www.raspberrypi.org/downloads/raspberry-pi-os/) and [installed](https://www.raspberrypi.org/documentation/installation/installing-images/README.md) it on your RPi. I also assume your RPi is running and functioning perfectly.

> Make sure you have extended your disk before performing any step from below.

# Step 0:

If you have problems related to low RAM you can follow these points, otherwise you can go to step 1.

### Disable swap service

	$ sudo dphys-swapfile swapoff

### Edit the swap file 

As root, edit the file /etc/dphys-swapfile and modify the variable CONF_SWAPSIZE (The size here is in MB):

	$ CONF_SWAPSIZE = 2048

	

To modify the swap file, edit the variable CONF_SWAPFILE, and run dphys-swapfile setup which will create and initialize the file.

### Restart the swap service

	$ sudo dphys-swapfile swapon

# Step 1:

	$ sudo apt-get update

	$ sudo apt-get upgrade

	$ sudo rpi-update (can be skipped, but recommended) (don't do it if you will use the RPI cam as recommended by official RPI Website)

	$ sudo reboot now

# Step 2:

	$ sudo apt-get install build-essential cmake pkg-config

# Step 3:

	$ sudo apt-get install libjpeg-dev libtiff5-dev libjasper-dev libpng12-dev

# Step 4:

	$ sudo apt-get install libgtk2.0-dev libgstreamer0.10-0-dbg libgstreamer0.10-0 libgstreamer0.10-dev libv4l-0 libv4l-dev

# Step 5:

	$ sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev

	$ sudo apt-get install libxvidcore-dev libx264-dev

# Step 6:

	$ sudo apt-get install libatlas-base-dev gfortran

	$ sudo apt-get install python-numpy python-scipy python-matplotlib

	$ sudo apt-get install default-jdk ant

	$ sudo apt-get install libgtkglext1-dev

	$ sudo apt-get install v4l-utils

# Step 7:

install pip

	$ wget https://bootstrap.pypa.io/get-pip.py

	$ sudo python get-pip.py

# Step 8:

	$ sudo apt-get install python2.7-dev

# Step 9:

	$ sudo pip install numpy

# Step 10:

Download OpenCV 3.2.0 and unpack it

	$ cd ~

	$ wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.2.0.zip

	$ unzip opencv.zip

Contrib Libraries (Non-free Modules)

	$ wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.2.0.zip

	$ unzip opencv_contrib.zip

# Step 11:

preparing the build

	$ cd ~/opencv-3.2.0/

	$ mkdir build

	$ cd build

	$ cmake -D CMAKE_BUILD_TYPE=RELEASE \

		-D CMAKE_INSTALL_PREFIX=/usr/local \

		-D INSTALL_C_EXAMPLES=OFF \

		-D INSTALL_PYTHON_EXAMPLES=ON \

		-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.2.0/modules \

		-D BUILD_EXAMPLES=ON \

		-D ENABLE_NEON=ON ..

# Step 12:

takes about 3.5 to 4 hours

	$ sudo make -j3 (I prefer -j3, because it doesn't use all the cores so it keeps the RPi cool enough)

	

	# If any errors occurs and the process fails to continue, execute

	

	$ sudo make clean

	

	# Sometimes using multicores can cause problems, so if you face any problems just execute 

	$ sudo make

	# but keep in mind that it will take much longer so be patient as much as you can and grab your cup of tea or coffee :p.

# Step 13:

installing the build prepared in step 11

	$ sudo make install

	$ sudo ldconfig

# Step 14:

	$ sudo nano /etc/ld.so.conf.d/opencv.conf

opencv.conf will be blank, add the following line, then save and exit nano:

	/usr/local/lib          # enter this in opencv.conf, NOT at the command line

				(leave a blank line at the end of opencv.conf)

save opencv.conf by pressing ctrl+o

get back again to the command line by pressing ctrl+x

	$ sudo ldconfig

	$ sudo nano /etc/bash.bashrc

add the following lines at the bottom of bash.bashrc

	PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig       

	export PKG_CONFIG_PATH

(leave a blank line at the end of bash.bashrc)

save bash.bashrc changes (ctrl+o), then back at the command line (ctrl+x), 

# Step 15:

Reboot

	$ sudo shutdown -r now

# Step 16 Last Step:

verifying the installation

Open Python 2 IDLE on RasPi

Type the following lines in the python shell:

	>>> import cv2

	>>> print cv2.__version__

the following line should appear then:

	'3.2.0'

## Done

**TODO**

- [ ] Connect to RPi without internet connection.