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Ubuntu下Qt如何使用openCV库
我在网上查找安装方法时有两种方式,第一种方案在第三步测试的源码时候没有成功,不知道问题出在哪里,源码换用了第二种方式。源码如果直接用第二种方式安装不成功,源码iappw表白源码可以试试进行第一种方式的源码android的linker源码第2步。
安装环境是源码Ubuntu .,内核版本2.6..。源码OpenCV版本为2.4.3。源码
第一种方式,源码参考org.cn/index.php/Debian%E4%B8%8B%E5%AE%%E8%A3%
1.更新下载更新软件包列表信息
$ apt-get update
2.查询OpenCV相关软件包
查询获得的源码内容和OpenCV软件包版本有关
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$ apt-cache search opencv
libcv-dev - development files for libcv
libcv4 - computer vision library
libcvaux-dev - development files for libcvaux
libcvaux4 - computer vision extension library
libhighgui-dev - development files for libhighgui
libhighgui4 - computer vision GUI library
opencv-doc - OpenCV documentation and examples
python-opencv - Python bindings for the computer vision library
harpia - Image Processing/Computer Vision Automatic Prgm. Tool
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3.测试
进入软件目录/sample/cpp,执行以下命令
g++ `pkg-config opencv --libs --cflags opencv` drawing.cpp -o drawing
成功编译并能执行表示安装成功。
第二种方式,源码OpenCV 2.4.3同样适用,源码sqoop源码maven依赖参考自/Linux/-/.htm
1.安装必要的源码依赖包
这一步我略去了,因为原文中提到的源码ffmepg1我并不需要安装,并且我是从第一种方式转过来的,就没有安装这些包,openmpi源码每个目录不过还是列在下面:
sudo apt-get install build-essential libgtk2.0-dev l www.hbbz.com ibjpeg-dev libtiff4-dev libjasper-dev libopenexr-dev cmake python-dev python-numpy libtbb-dev libeigen2-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev
2.安装OpenCV
(1)下载OpenCV 2.4.3 /projects/opencvlibrary/
(2) tar -xvf OpenCV-2.4.3.tar.bz2
(3)将其复制到 “ home/你的计算机名/”下;
(4)cd OpenCV-2.4.3
(5)mkdir release
(6)cd release
(7)
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_TBB=ON -D WITH_V4L=OFF -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON ..
如果没有cmake,apt-get install就行
(8) make
(9)sudo make install
3.添加库的路径
(1)sudo gedit /etc/ld.so.conf.d/opencv.conf
文件可能需要创建,添加下面内容并保存
/usr/local/lib
(2)sudo ldconfig
(3) sudo gedit /etc/environment
添加下面内容
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
这时,再回到OpenCV-2.4.3/sample/cpp下时,速效救心丸溯源码用第一种方式的测试方法,drawing.cpp文件就能正确编译,而且也可以通过生成的文件看到效果了。
.1.6更新:QT调用openCV库(ixunjishu/qianrushipeixun/.html)
QT的安装过程就略去了,注意需要QT设计器和QTcreator,前者我是下源码编译的,后者用软件中心装的。
配置QT, 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
实例程序,创建一个QT4 Console Application,代码如下:
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#include <cv.h>
#include <highgui.h>
int main()
{
IplImage *img = 0;
img = cvLoadImage("Lena.bmp",-1);//Lena.bmp在所建工程的目录下
cvNamedWindow("lena", 1);
cvShowImage("lena", img);
cvWaitKey(0);
return 0;
}
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关键的一步,在工程的.pro文件添加下面的内容:
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INCLUDEPATH += /usr/include/opencv
LIBS += /usr/lib/libcv.so \
/usr/lib/libcvaux.so \
/usr/lib/libcxcore.so \
/usr/lib/libhighgui.so \
/usr/lib/libml.so
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这时就能编译运行了。