如何链接opencv在QtCreator和使用Qt库 [英] How to link opencv in QtCreator and use Qt library

问题描述

这个问题必须重复多次，但它只是不工作，有时它仍然没有回答。信息来源主要是以下

http://www.laganiere.name/opencvCookbook/chap1s1_2.shtml

http://www.youtube.com/watch?v=dgcXYQijV6c

This question must be duplicate many times, but it just doesn't work and sometimes it still remains unanswered. Sources of information are mainly these
http://www.laganiere.name/opencvCookbook/chap1s1_2.shtml
http://www.youtube.com/watch?v=dgcXYQijV6c

这是我认为应该/可以做的总结。希望我从一开始就提到一切，目的是写一个非常清晰的教程。

This is the summation of what I think one should/can do. (And now it works for me.) Hopefully I mentioned everything from the very beginning, the aim is to write a very clear tutorial.

安装的OpenCV for QtCreator

1. 我已经安装了MS Visual Studio 2010 Professional。 （我有一个学生的免费许可证） - 我认为这是没有必要的，只是提一下


2. 下载： Qt 5.0.1 for Windows 32位（MinGW 4.7,823 MB）
   
   2.1 安装：警告，Qt使用的一切（例如OpenCV）必须在名称中不包含空格的目录中。 - 即程序文件是错误的。 （但我不想让不同的程序文件直接在C上累积，所以我只创建了一个文件夹程序，其中一切重要的安装）


3. 下载： cmake-2.8.10.2-win32-x86.exe - 为所有用户安装（可以在程序文件中）


4. 2.4.0.exe，解压到： C：\Programs\opencv24 - 它会创建一个diropencv;添加另一个文件夹opencv_bin。现在看起来像这样：
   
   C：\Programs \opencv24\opencv *
   
   C：\Programs\opencv24 \opencv_bin


5. 设置PATH环境变量，以便有一个指向MinGW编译器的链接。例如 C：\Programs\Qt\Qt5.0.1\Tools\MinGW\bin;


6. 启动cmake-gui.exe
   
   6.1 源代码：设置OpenCV的默认目录; C：\Programs \opencv24\opencv
   
   6.2 二进制文件：设置opencv_bin目录; C：\Programs\copencv24\opencv_bin
   
   6.3 点击配置：
   
   
   • 选择 MinGW Makefiles 指定原生编译器，请点击下一步
   
   
   • 字段C用于gcc.exe; C：/Programs/Qt/Qt5.0.1/Tools/MinGW/bin/gcc.exe
   
   
   • 字段C ++适用于g ++。 C：/Programs/Qt/Qt5.0.1/Tools/MinGW/bin/g ++。exe
   
   字段fortran可以为空，单击完成
   

1. I have already MS Visual Studio 2010 Professional installed. (I have a free licence as a student) - I think this is not necessary, just a mention
2. Download: Qt 5.0.1 for Windows 32-bit (MinGW 4.7, 823 MB)
   2.1 Install: Warning, everything that Qt uses (e.g. OpenCV) must be in directories that don't contain white-spaces in their names. - i.e. "Program Files" is wrong. (But I don't want different program files to accumulate directly on C, so I've only made a folder "Programs" in which everything important is installed)
3. Download: cmake-2.8.10.2-win32-x86.exe - Install for all users (this can be in Program Files)
4. Download: OpenCV-2.4.0.exe, extract to: C:\Programs\opencv24 - it'll create a dir "opencv"; add another folder "opencv_bin". Now it looks like this:
   C:\Programs\opencv24\opencv*
   C:\Programs\opencv24\opencv_bin
5. Set PATH environment variable, so that there be a link to MinGW compiler. e.g. C:\Programs\Qt\Qt5.0.1\Tools\MinGW\bin;
6. Start cmake-gui.exe
   6.1 source code: set the default dir for OpenCV; C:\Programs\opencv24\opencv
   6.2 binaries: set the opencv_bin dir; C:\Programs\copencv24\opencv_bin
   6.3 click configure:
   • Choose MinGW Makefiles and Specify native compilers, click next
   • Field C is for gcc.exe; C:/Programs/Qt/Qt5.0.1/Tools/MinGW/bin/gcc.exe
   • Field C++ is for g++.exe; C:/Programs/Qt/Qt5.0.1/Tools/MinGW/bin/g++.exe
   Field fortran can be empty, click finish

• WITH_QT选择。


• 必须取消选择WITH_TBB，WITH_IPP，WITH_CUDA


• CMAKE_BUILD_TYPE - 点击并输入文字调试
  清除搜索字段中的文本。
  

• WITH_QT - must be selected.
• WITH_TBB, WITH_IPP, WITH_CUDA - must be unselected
• CMAKE_BUILD_TYPE - click and enter a text "Debug" (without quotes).
Clear the text from the Search field.

现在我在QtCreator中创建了一个新的控制台应用程序。

Now I have created a new console app in QtCreator.

//cvHello.pro
QT       += core
QT       -= gui

TARGET = cvHello
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app
INCLUDEPATH += C:/Programs/opencv24/opencv_bin2/install/include
LIBS += "C:/Programs/opencv24/opencv_bin2/bin/*.dll"

SOURCES += main.cpp
OTHER_FILES += \
    img.JPG

主文件：

//main.cpp
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv/cv.h"

using namespace std;

int main()
{
    cout << "Hello World!" << endl;

    cv::Mat mat;
    mat = cv::imread("img.JPG");
    cvNamedWindow("hello");
    cv::imshow("hello",mat);

    cvWaitKey(0);

    return 0;
}

推荐答案

快乐。当调整这个问题，我不得不尝试所有的方式，如何定义LIBS。手动帮助列出他们，一开始我写错了他们。

Finally I am starting to be happy. When adjusting this question I had to try all ways, how to define LIBS. Listing them manually helped, at first I wrote them somehow wrongly.

这是它的工作原理：

LIBS += -LC:\\Programs\\opencv24\\opencv_bin2\\bin \
    libopencv_core240d \
    libopencv_highgui240d \
    libopencv_imgproc240d \
    libopencv_features2d240d \
    libopencv_calib3d240d \

Btw如果我犯了任何语法错误，我很抱歉我的英语。 ：）

Btw if I've made any grammar mistakes, I am sorry for my english. :)

这篇关于如何链接opencv在QtCreator和使用Qt库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！