Qt+Opencv配置

在Win7（32）位下：1、版本：    Qt版本：qt-opensource-windows-x86-android-5.5.1.exe    链接地址：http://download.qt.io/archive/qt/5.5/5.5.1/    OpenCV版本：OpenCV2.4.12、安装好Qt之后，将D:\Program Files\opencv\build\x86\vc10\bin,D:\qt\5.5\mingw492_32\bin的路径添加到Path中，在创建工程的时候，向工程    .pro文件中添加： INCLUDEPATH+="D:/ProgramFiles/opencv/build/include"\

"D:/Program Files/opencv/build/include/opencv" \

"D:/Program Files/opencv/build/include/opencv2"

LIBS+= -L"D:/Program Files/opencv/build/x86/vc10/lib/" -lopencv_ml2411d -lopencv_calib3d2411d -lopencv_contrib2411d -lopencv_core2411d \

-lopencv_features2d2411d -lopencv_flann2411d -lopencv_gpu2411d -lopencv_imgproc2411d -lopencv_legacy2411d -lopencv_objdetect2411d \

-lopencv_ts2411d -lopencv_video2411d -lopencv_nonfree2411d -lopencv_ocl2411d -lopencv_photo2411d -lopencv_stitching2411d \

-lopencv_superres2411d -lopencv_videostab2411d -lopencv_highgui2411d

  表达式的第一部分（

-L...

）：使链接器知道应该在哪个目录中查找库文件。双引号只在路径包含空格时才需要。  表达式的第二部分（

-l...

）：告诉链接器链接哪些库，没有必要指定 .lib 扩展名。3、main.cpp如下：

#include<opencv2/highgui/highgui.hpp>

#include<opencv2/imgproc/imgproc.hpp>

using namespace cv;

int main()

{

IplImage *src = cvLoadImage("Example1.png", -1);

cvShowImage("src", src);

cvWaitKey(0);

cvReleaseImage(&src);

return 0;

}

并把Example1.png图片拷贝到Debug目录下，可以正常打开图片，但是将main.cpp函数改成以下：

#include<opencv2/highgui/highgui.hpp>

#include<opencv2/imgproc/imgproc.hpp>

using namespace cv;

int main()

{

/* IplImage *src = cvLoadImage("Example1.png", -1);

cvShowImage("src", src);

cvWaitKey(0);

cvReleaseImage(&src);*/

Mat src = imread("Example1.png", 0);

imshow("src", src);

waitKey(0);

 return 0;

}

编译出现错误：

debug/main.o: In function `main': C:\Users\Administrator.AZU9F7UB7BS30XB\Desktop\test\build-55y-Desktop_Qt_5_5_1_MinGW_32bit-Debug/../55y/main.cpp:11: undefined reference to `cv::imread(std::string const&, int)' C:\Users\Administrator.AZU9F7UB7BS30XB\Desktop\test\build-55y-Desktop_Qt_5_5_1_MinGW_32bit-Debug/../55y/main.cpp:12: undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)' C:\Users\Administrator.AZU9F7UB7BS30XB\Desktop\test\build-55y-Desktop_Qt_5_5_1_MinGW_32bit-Debug/../55y/main.cpp:12: undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)' C:\Users\Administrator.AZU9F7UB7BS30XB\Desktop\test\build-55y-Desktop_Qt_5_5_1_MinGW_32bit-Debug/../55y/main.cpp:13: undefined reference to `cv::waitKey(int)' debug/main.o: In function `ZN2cv3MatD1Ev': D:/Program Files/opencv/build/include/opencv2/core/mat.hpp:278: undefined reference to `cv::fastFree(void*)' debug/main.o: In function `ZN2cv3Mat7releaseEv': D:/Program Files/opencv/build/include/opencv2/core/mat.hpp:367: undefined reference to `cv::Mat::deallocate()' collect2.exe: error: ld returned 1 exit status Makefile.Debug:77: recipe for target 'debug\55y.exe' failed mingw32-make[1]: *** [debug\55y.exe] Error 1 mingw32-make[1]: Leaving directory 'C:/Users/Administrator.AZU9F7UB7BS30XB/Desktop/test/build-55y-Desktop_Qt_5_5_1_MinGW_32bit-Debug' makefile:34: recipe for target 'debug' failed mingw32-make: *** [debug] Error 2 14:42:15: 进程"D:\qt\Tools\mingw492_32\bin\mingw32-make.exe"退出，退出代码 2 。 Error while building/deploying project 55y (kit: Desktop Qt 5.5.1 MinGW 32bit) When executing step "Make" 说明编译器找不到lib库文件，opencv2中新添加函数和结构不能用，例如：Mat结构，imread函数，VideoCapture结构等;