linux mint安装opencv

2018-03-21

依赖安装

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[compiler] sudo apt-get install build-essential`
[required] sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
[optional] sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

下载源码

1 2	cd ~/<my_working _directory> git clone https://github.com/opencv/opencv.git

或者直接从官网下载

https://codeload.github.com/opencv/opencv/zip/3.4.1

编译源码

cd ~/opencv
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D WITH_V4L=ON -D WITH_QT=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D WITH_OPENGL=ON ..

.. 表示上一级目录

安装

1 2	make -j4 # 4代表cpu内核个数，可以加快编译速度 sudo make install

#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;

int main()
{
    Mat srcImage = imread("lena.jpg");
    imshow("srcIMage",srcImage);

    waitKey(0);

    return 0;
}

注：你需要保证lena.jpg位于当前目录下。
upload successful

1）执行g++ `pkg-config opencv --cflags` opencv.cpp  -o opencv `pkg-config opencv --libs`   
2）./opencv  # 运行结果

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可能出现的错误

错误1：无法编译通过

 //home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucnv_compareNames_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucal_close_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucnv_getAvailableName_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucal_openTimeZoneIDEnumeration_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucal_open_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucol_setAttribute_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucal_openTimeZones_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `uenum_close_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucnv_countAliases_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucol_close_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucol_getSortKey_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucal_get_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `uenum_next_58'
//home/h/anaconda3/lib/libQt5Core.so.5: undefined reference to `ucnv_toUnicode_58'
collect2: error: ld returned 1 exit status

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安装qt5

export LD_LIBRARY_PATH=/home/h/Qt5.10.1/5.10.1/gcc_64/lib/
export PATH=”$PATH:$LD_LIBRARY_PATH”

错误2：编译通过，无法执行

1	This application failed to start because it could not find or load the Qt platform plugin "xcb"

export LD_LIBRARY_PATH=/home/h/Qt5.10.1/5.10.1/gcc_64/
export PATH=”$PATH:$LD_LIBRARY_PATH”