Install and test OpenCV 14.04 + Python 3.0 in Ubuntu 2.7

Install and test OpenCV 14.04 + Python 3.0 in Ubuntu 2.7

This document describes how to manually install OpenCV 14.04 using the source code in Ubuntu 3.0. In addition, the method for installing and loading OpenCV in Python is recorded.

1. Install the library required by OpenCV (compiler, required library, and optional Library)

• GCC 4.4.x or later
• CMake 2.6 or higher
• Git
• GTK + 2.x or higher, including headers (libgtk2.0-dev)
• Pkg-config
• Python 2.6 or later and Numpy 1.5 or later with developer packages (python-dev, python-numpy)
• Ffmpeg or libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev
• [Optional] libtbb2 libtbb-dev
• [Optional] libdc1394 2.x
• [Optional] libjpeg-dev, libpng-dev, libtiff-dev, libjasper-dev, libdc1394-22-dev

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

2, download the latest opencv source code from the official website (more than 2.4) http://sourceforge.net/projects/opencvlibrary/

Or github

3. Compile opencv

Store opencv in any directory and decompress it.

Unzip opencv-3.0.0-rc1.zip

Create a compilation directory and compile

Cd ~ Opencv-3.0.0-rc1
Mkdir release
Cd release
Cmake-D CMAKE_BUILD_TYPE = RELEASE-D CMAKE_INSTALL_PREFIX =/usr/local ..
Make
Sudo make install

4. Test opencv

1) Create a working directory

Mkdir ~ /Opencv-lena
Cd ~ /Opencv-lena
Gedit DisplayImage. cpp

2) edit the following code:

# 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;
}

3) create a CMake compiling File

Gedit CMakeLists.txt

Write the following content

Cmake_minimum_required (VERSION 2.8)
Project (DisplayImage)
Find_package (OpenCV REQUIRED)
Add_executable (DisplayImage. cpp)
Target_link_libraries (DisplayImage $ {OpenCV_LIBS })

4) Compile

Cd ~ /Opencv-lena
Cmake.
Make

5) Execution

Export opencv-lena the executable file displayimagehas been stored in the folder, and lena.jpg is downloaded under opencv-lena to run

./DisplayImage lena.jpg

6) Result

5. Install python-opencv

You can directly use apt for installation.

Sudo apt-get install python-opencv
Sudo apt-get install python-numpy

Test:

Open python and import the cv module.

Import cv

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