linux下配置opencv和qt

一、安装

1 安装cmake及一些依赖库

sudo apt-get install cmake
sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev
libavformat-dev libjpeg.dev libtiff4.dev libswscale-dev libjasper-dev

2 安装opencv

从官网下载opencv并解压，cd命令进入opencv的目录

cmake .
sudo make
sudo makeinstall

二、配置

1 将opencv的库加入到路径，从而让系统可以找到

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

末尾加入

/usr/local/lib

，保存退出

sudo ldconfig

#使配置生效

sudo gedit /etc/bash.bashrc

末尾加入

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

export PKG_CONFIG_PATH

保存退出

将opencv库加入到qtcreator里

sudo gedit /usr/share/qt4/mkspecs/default/qmake.conf

在文件内添加了下面两句：

QMAKE_INCDIR = /usr/include/opencv
QMAKE_LIBS = -lcvaux -lcv -lcxcore -lhighgui -lml

先新建一个qt工程

#include <cv.h>
#include <highgui.h>

int main()
{
IplImage *img = 0;
img = cvLoadImage("Lena.bmp",-1);
cvNamedWindow("lena", 1);
cvShowImage("lena", img);
cvWaitKey(0);
return 0;
}

此时需要在opencv.pro文件内添加：

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

可以直接将上面的添加的INCLUDEPATH和LIBS内容添加到

sudo gedit /usr/share/qt4/mkspecs/default/qmake.conf

这样以后就不用在每个工程里配置了。