Compiling and installing OpenCV 3.1.0 in Ubuntu

Compiling and installing OpenCV 3.1.0 in Ubuntu

Opencv compilation and installation in Ubuntu

Install the compiling environment:

Sudo apt-get install build-essential

Required package installation:

Sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

Optional package installation:

Sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

Opencv download:

Stable version

Wget https://github.com/Itseez/opencv/archive/3.1.0.zip

Github source code

Git clone git: // github.com/Itseez/opencv.git

Create a temporary directory for compilation:

Cd ~ /Opencv

Mkdir build

Cd build

Note: we assume that the source code directory extracted by opencv or obtained from github is in the user's main directory.

Generate cmake compilation Configuration:

Cmake-D CMAKE_BUILD_TYPE = Release-D CMAKE_INSTALL_PREFIX =/usr/local ..

Compile:

Make-j4 # runs 4 jobs in parallel

Install opencv:

Sudo make install

Run the test:

Git clone https://github.com/Itseez/opencv_extra.git

OPENCV_TEST_DATA_PATH = ~ /Opencv_extra

~ /Opencv/build/bin/opencv_test_core

Example:

First, create a directory test and enter the directory:

Mkdir test

Cd test

Create the DisplayImage. cpp file as follows:

# Include <stdio. h>

# Include <opencv2/opencv. hpp>

Using namespace cv;

Int main (int argc, char ** argv)

{

If (argc! = 2)

{

Printf ("usage: DisplayImage. out <Image_Path> \ n ");

Return-1;

}

Mat image;

Image = imread (argv [1], 1 );

If (! Image. data)

{

Printf ("No image data \ n ");

Return-1;

}

NamedWindow ("Display Image", WINDOW_AUTOSIZE );

Imshow ("Display Image", image );

WaitKey (0 );

Return 0;

}

Create the cmake configuration file CMakeLists.txt as follows:

Cmake_minimum_required (VERSION 2.8)

Project (DisplayImage)

Find_package (OpenCV REQUIRED)

Include_directories ($ {OpenCV_INCLUDE_DIRS })

Add_executable (DisplayImage. cpp)

Target_link_libraries (DisplayImage $ {OpenCV_LIBS })

Last run:

./DisplayImage bkjia.jpg # any image is required.

Refer:

Http://docs.opencv.org/3.1.0/d7/d9f/tutorial_linux_install.html

Http://docs.opencv.org/3.1.0/db/df5/tutorial_linux_gcc_cmake.html

OpenCV official tutorial Chinese version (For Python) PDF

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