ubuntu qt opencv

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本文详细介绍如何在Ubuntu 12.04上安装OpenCV 2.4.2或2.4.3版本，包括必备环境搭建、依赖库安装、源码编译配置等步骤，并提供了测试安装是否成功的示例。

1.sudo apt-get install qt4-dev-tools qt4-doc qt4-qtconfig qt4-demos qt4-designer

2.连接MySQL数据库，需要安装连接MySQL的驱动程序：

sudo apt-get install libqt4-sql-mysql

opencv

1.sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg62-dev libtiff4-dev cmake libswscale-dev libjasper-dev(cmake-gui,)

1）在安装OpenCV前需要安装的软件包有

GCC4.4.X or later，可通过命令sudo apt-get install build-essential安装

CMake2.6 or later

SVN客户端

GTK+2.Xor higher, including headers(libgtk2.0-dev)

pkgconfig

Python2.6 or later and Numpy 1.5 or later with developerpackages(python-dev, python-numpy)

ffmpegor libav development packages: libavcodec-dev, libavformat-dev,libswsacle-dev

[可选]libdc13942.x

[可选]libjpeg-dev,libpng-dev, libtiff-dev, libjasper-dev

所有的软件包都可在终端安装或者通过Synaptic软件管理器。
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

下载安装包OpenCV-2.4.2.tar.bz2

sudo tar jxvf OpenCV-2.4.2.tar.bz2 -C /usr/local/
cd /usr/local/
sudo mv OpenCV-2.4.2 opencv
cd opencv
mkdir release
cd 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

3）安装后的配置

添加库的路径

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

添加内容

/usr/local/lib

在终端输入命令

sudo ldconfig

设置环境变量

sudo gedit /etc/bash.bashrc

在文件最后加入以下两行并保存：

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig export PKG_CONFIG_PATH 此时重启Ubuntu或重新登录账户，使得OpenCV安装生效。

4）测试OpenCV自带例程

编译程序：

cd /usr/local/opencv/samples/c

chmod +x build_all.sh

./build_all.sh

测试：gcc `pkg-config opencv --libs --cflags opencv` -o main main.c

如果出现：

opencv1.c:(.text+0×23): undefined reference to `cvLoadImage’
opencv1.c:(.text+0×36): undefined reference to `cvNamedWindow’
opencv1.c:(.text+0×47): undefined reference to `cvShowImage’
opencv1.c:(.text+0×51): undefined reference to `cvWaitKey’
opencv1.c:(.text+0x5d): undefined reference to `cvReleaseImage’
opencv1.c:(.text+0×67): undefined reference to `cvDestroyWindow’
collect2: ld returned 1 exit status

则用：gcc `pkg-config --cflags opencv` -o main main.c `pkg-config --libs opencv`

OpenCV installation for Ubuntu 12.04 To install OpenCV 2.4.2 or 2.4.3 on the Ubuntu 12.04 operating system, first install a developer environment to build OpenCV. sudo apt-get -y install build-essential cmake pkg-config Install Image I/O libraries sudo apt-get -y install libjpeg62-dev sudo apt-get -y install libtiff4-dev libjasper-dev Install the GTK dev library sudo apt-get -y install libgtk2.0-dev Install Video I/O libraries sudo apt-get -y install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev Optional - install support for Firewire video cameras Optional - install video streaming libraries sudo apt-get -y install libxine-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev Optional - install the Python development environment and the Python Numerical library sudo apt-get -y install python-dev python-numpy Optional - install the parallel code processing library (the Intel tbb library) sudo apt-get -y install libtbb-dev Optional - install the Qt dev library sudo apt-get -y install libqt4-dev Now download OpenCV 2.4 to wherever you want to compile the source. mkdir xxx cd xxx wget http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.2/Op... or wget http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.3/Op... tar -xvf OpenCV-2.4.*.tar.bz2 Create and build directory and onfigure OpenCV with cmake. Don't forget the .. part at the end of cmake cmd !! cd OpenCV-2.4.* mkdir build cd build cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON .. Now compile it make And finally install OpenCV sudo make install Tags: cmake -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr/local -DWITH_TBB=ON -DBUILD_NEW_PYTHON_SUPPORT=ON -DWITH_V4L=ON -DINSTALL_C_EXAMPLES=ON -DINSTALL_PYTHON_EXAMPLES=ON -DBUILD_EXAMPLES=ON -DWITH_QT=ON -DWITH_OPENGL=ON ..