ubuntu12.04安装opencv2.4.8,并运行简单例子

1. 下载最新版OpenCV

打开网页：http://sourceforge.net/projects/opencvlibrary

2.在安装OpenCV前需要安装的软件包有
GCC4.4.X or later，可通过命令安装

sudo apt-get install build-essential
终端安装依赖项：

sudo apt-get install build-essential libgtk2.0-dev libjpeg-dev libtiff4-dev

libjasper-dev libopenexr-dev cmake python-dev python-numpy python-tk libtbb-dev

libeigen2-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev

libvorbis-dev libxvidcore-dev libx264-dev libqt4-dev libqt4-opengl-dev sphinx-common

texlive-latex-extra libv4l-dev libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev

若提示找不到，则先进行更新

sudo apt-get update

3、编译OpenCV

进入下载目录

sudo unzip opencv-2.4.8.zip /usr/local/

cd /usr/local

sudo mv opencv-2.4.8 opencv

cd opencv sudo

mkdir release

cmake -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -DINSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -DBUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON ..

make

sudo make install

4、配置环境变量

配置opencv的库文件的路径等

sudo gedit /et/ld.so.conf.d/opencv.conf

/usr/local/lib

sudo ldconfig

sudo gedit /etc/bash.bashrc

在文件的末尾添加下载两行

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

2 exportPKG_CONFIG_PATH

然后重新启动ubuntu

5. 简单测试程序

载入一张图片并显示

建立你的工作目录并进入，写hello.cpp文件

#include <stdio.h>
#include <opencv2/opencv.hpp>

using namespace cv;

int main( int argc, char** argv )
{
Mat image;
image = imread("lena.jpg");

namedWindow( "Display Image", CV_WINDOW_AUTOSIZE );
imshow( "Display Image", image );

waitKey(0);

return 0;
}

采用cmake的方式编译，编写CMakeLists.txt文件

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

然后编译hello.cpp

cmake .

make

运行程序

./hello