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,重启电脑,或者执行sudo
ldconfig
(关于ldconfig:ubuntu把在开机时所有库文件装入到缓存,这样避免每次使用链接库都需装载,提高系统的效率,ldconfig命令就是重新装载,可通过ldconfig
-v查看已经在缓存里的库。)
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;
}
}