Install opencv in centos 6

I installed it yesterday. I can't remember some details today. I 'd like to give it a rough description.

First, download the Linux opencv-2.4.9 installation package from the opencv Official Website: http://jaist.dl.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.9/opencv-2.4.9.zip

Then, because the download of eleven zip compressed package, so to install a RAR decompression software,: http://www.rarsoft.com/rar/rarlinux-x64-5.1.1.tar.gz

RAR installation command:

# Tar-xzvf rarlinux-x64-5.1.1.tar.gz # cd RAR // The Name Of The extracted folder is rar, available ls view # Make # make install

Then, directly

# RAR x opencv-2.4.9.zip
# Cd opencv-2.4.9
# Cmake cmakelists.txt // note that cmake must use a new version. Otherwise, it cannot be compiled.
# Make
# Make install

Note: here, the cmake version of my system is 2.3. If the compilation fails, an error is reported:

Cc1plus: warning the command line option "-wmissing-prototypes" is valid for Ada, C, and objc, but not for C ++.
Cc1plus: warning the command line option "-wstrict-prototypes" is valid for Ada, C, and objc, but not for C ++.

After some look finally found that the cmake version is too low, and then download the installation of cmake3.0.2: http://www.cmake.org/files/v3.0/cmake-3.0.2.tar.gz

To install cmake3.0.2, you must use cmake2.6 or a later version to compile it. I still cannot install the current version. When I was depressed, I found a lifeline:

The cmake folder contains a bootstrap file.

#./bootstrap
#make
#make install

To complete the installation.

Test procedure:

Source program displayimage. cpp

#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", CV_WINDOW_AUTOSIZE );    imshow("Display Image", image);    waitKey(0);    return 0;}

Cmake file cmakelists.txt

cmake_minimum_required(VERSION 2.8)project( DisplayImage )find_package( OpenCV REQUIRED )add_executable( DisplayImage DisplayImage.cpp )target_link_libraries( DisplayImage ${OpenCV_LIBS} )

Then compile the file:

#cd <DisplayImage_directory>#cmake .#make

Execution result:

#./DisplayImage lena.jpg

Install opencv in centos 6