01.linux下搭建opencv并在qt中使用

linux下搭建opencv并在qt中使用

作者：vmezr

由于最近要着手做pcduino上的视频聊天的项目，从未接触过pcduino，经过讨论决定使用qt来实现。其实qt和opencv 我都没有接触过，也打算趁机学习一下。言归正传，首先得搭建好需要的环境，第一步是安装配置opencv，然后在qt中使用opencv的库。

（opencv的安装方法部分参考雷雨同鞋哒~）

首先，在官网/中下载opencv原码，选择linux版本进行下载。

以opencv2.4.8为例：（我用的是opencv2.4.13）

1.将压缩包解压到/usr/local/

2.直接使用sudo apt-get install cmake下载并安装cmake

3.为了方便后续摄像头捕捉等功能还需要下载opencv依赖的一些包：

apt-cache search opencv

使用此命令可以直接查到需要下载的依赖包

leo@leo-virtual-machine:/usr/local/opencv/release$ apt-cache search opencv

libcv-dev - Translation package for libcv-dev

libcv2.3 - computer vision library - libcv* translation package

libcvaux-dev - Translation package for libcvaux-dev

libcvaux2.3 - computer vision library - libcvaux translation package

libhighgui-dev - Translation package for libhighgui-dev

libhighgui2.3 - computer vision library - libhighgui translation package

libopencv-calib3d-dev - development files for libopencv-calib3d

libopencv-calib3d2.3 - computer vision Camera Calibration library

libopencv-contrib-dev - development files for libopencv-contrib

libopencv-contrib2.3 - computer vision contrib library

libopencv-core-dev - development files for libopencv-core

libopencv-core2.3 - computer vision core library

libopencv-dev - development files for opencv

libopencv-features2d-dev - development files for libopencv-features2d

libopencv-features2d2.3 - computer vision Feature Detection and Descriptor Extraction library libopencv-flann-dev - development files for libopencv-flann

libopencv-flann2.3 - computer vision Clustering and Search in Multi-Dimensional spaces library libopencv-gpu-dev - development files for libopencv-gpu

libopencv-gpu2.3 - computer vision GPU Processing library

libopencv-highgui-dev - development files for libopencv-highgui

libopencv-highgui2.3 - computer vision High-level GUI and Media I/O library

libopencv-imgproc-dev - development files for libopencv-imgproc

libopencv-imgproc2.3 - computer vision Image Processing library

libopencv-legacy-dev - development files for libopencv-legacy

libopencv-legacy2.3 - computer vision legacy library

libopencv-ml-dev - development files for libopencv-ml

libopencv-ml2.3 - computer vision Machine Learning library

libopencv-objdetect-dev - development files for libopencv-objdetect

libopencv-objdetect2.3 - computer vision Object Detection library

libopencv-video-dev - development files for libopencv-video

libopencv-video2.3 - computer vision Video analysis library

opencv-doc - OpenCV documentation and examples

python-opencv - Python bindings for the computer vision library

4.安装上述所依赖的包(sudo apt-get install xxx就ok)

5.接着就要编译opencv的原码并安装：

执行以下命令：

sudo mv opencv-2.4.8 opencv

cd opencv

mkdir release

cd release

sudo cmake -D CMAKE_BUILD_TYPE=RELEASE -D WITH_TBB=ON -D BUILD_opencv_python2=ON -D