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compile opencv on ubuntu 16.04

Series

• Part 1: compile opencv on ubuntu 16.04
• Part 2: compile opencv with CUDA support on windows 10
• Part 3: opencv mat for loop
• Part 4: speed up opencv image processing with openmp

Guide

requirements:

• ubuntu: 16.04
• opencv: 3.3.0

install dependencies

sudo apt-get install build-essential
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

sudo apt-get install cmake-gui

compile

git clone https://github.com/opencv/opencv.git
wget https://github.com/opencv/opencv/archive/3.1.0.zip

cd opencv-3.1.0
mkdir build
cd build && cmake-gui ..

# may take several minutes
sudo make -j8 

# install to /usr/local/bin
sudo make install

check version

opencv_version
3.3.0

python cv2

python
>>> import cv2
>>> cv2.__version__

pip install opencv

workon py3
pip install opencv-contrib-python

python
>import cv2
>cv2.__version__
'3.3.0'

for virtualenv, see python virtualenv tutorial

opencv samples

cd samples
cmake .
make

Example

Code

#include <iostream>
using namespace std;

#include <opencv2/core.hpp>
#include <opencv2/imgproc.hpp>
#include <opencv2/highgui.hpp>
using namespace cv;

int main()
{
    Mat image = imread("../image/cat.jpg",0);
    imshow("image",image);
    waitKey(0);
    return 0;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8.8)

project(demo)

# Find includes in corresponding build directories
set(CMAKE_INCLUDE_CURRENT_DIR ON)

find_package(OpenCV REQUIRED COMPONENTS core highgui imgproc features2d calib3d) 
include_directories(${OpenCV_INCLUDE_DIRS})

message( [opencv] ${OpenCV_INCLUDE_DIRS} )
message( [opencv] ${${OpenCV_LIBS}} )
message( [opencv] ${${OpenCV_LIBRARIES}} )


add_executable(${PROJECT_NAME} 
    demo.cpp
)
target_link_libraries(${PROJECT_NAME} ${OpenCV_LIBRARIES})

Reference

• Guide to compile and use opencv with CUDA support on windows 10
• opencv with openmp
• opencv WITH_OPENMP

History

• 20180919: created.

Copyright

• Post author: kezunlin
• Post link: https://kezunlin.me/post/15f5c3e8/
• Copyright Notice: All articles in this blog are licensed under CC BY-NC-SA 3.0 unless stating additionally.