ubuntu14.04 + Qt5.4 + opencv2.4.10

1、安装 cmake

sudo apt-get install cmake

CMake是一个跨平台的安装(编译)工具,可以用简单的语句来描述所有平台的安装(编译过程)。他能够输出各种各样的makefile或者project文件,能测试编译器所支持的C++特性,类似UNIX下的automake。OpenCV使用cmake进行makefile的创建。

2、安装 opencv

将OpenCV包解压到用户目录下，得到opencv文件夹

cd ~/opencv

mkdir release

cd release

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..

（注意“..”前有空格）

make

等待大概十分钟make完成

sudo make install

至此opencv库安装到了/usr/local/lib目录下

然后

gedit /etc/ld.so.conf.d/opencv.conf      

将以下内容添加到最后：

/usr/local/lib

然后

sudo ldconfig      

3、安装Qt

example:

.pro 文件如下：

#-------------------------------------------------

#

# Project created by QtCreator 2015-01-25T16:37:17

#

#-------------------------------------------------

QT       += core

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = test

TEMPLATE = app

SOURCES += main.cpp

HEADERS  +=

FORMS    +=

INCLUDEPATH += /usr/local/include \

                /usr/local/include/opencv \

                /usr/local/include/opencv2

LIBS += /usr/local/lib/libopencv_highgui.so \

        /usr/local/lib/libopencv_core.so    \

        /usr/local/lib/libopencv_imgproc.so

main.cpp文件如下：

#include <opencv2/core/core.hpp>

#include <opencv2/highgui/highgui.hpp>

#include <opencv2/imgproc/imgproc.hpp>

using namespace cv;

int main(int argc, char *argv[])

{

    namedWindow( "src", WINDOW_AUTOSIZE );

    Mat src1 = imread( "lena.jpg" );

    while(1)

    {

        imshow( "src", src1 );

        char c =  waitKey(30);

        if( 27==c )

            return 0;

    }

}