错误：未定义对 \`cv::imread(std::string const&, int)' 的引用

Question

我是 Qt 新手，我有一个需要在 Qt 中配置 OpenCV 的项目，我尝试在 Qt 中运行一个简单的代码，但我收到了这个错误“未定义的对 cv::imread(std::string const&, int) 的引用”，这是我的代码…

 #include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"

using namespace cv;

int main(){
Mat src,gray;
src=imread("C:/Users/user/Desktop/wood-pattern.png",1);
imshow("gg",src);
cvWaitKey(0);
return 0;
}

我的 source.pro 是

#-------------------------------------------------
#
# Project created by QtCreator 2014-08-24T20:38:56
#
#-------------------------------------------------
INCLUDEPATH += C:\opencv\opencv2.4.9\build\include\
CONFIG(release,debug|release)
{
LIBS += C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_calib3d249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_contrib249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_core249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_features2d249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_flann249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_gpu249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_highgui249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_imgproc249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_legacy249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_ml249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_objdetect249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_ts249.lib \
        C:\opencv\opencv2.4.9\build\x86\vc11\lib\opencv_video249.lib
        }
CONFIG(debug,debug|release)
       {
LIBS += C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_calib3d249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_contrib249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_core249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_features2d249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_flann249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_gpu249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_highgui249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_imgproc249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_legacy249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_ml249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_objdetect249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_ts249.lib \
        C:\opencv\opencv2.4.9\build\x64\vc11\lib\opencv_video249.lib \
}
QT       += core

QT       -= gui

TARGET = Source
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

我看到了所有的答案，但他们没有工作。我的 Qt 是 32 位，我的 Windows 是 64 位。我认为我的配置是错误的。我遵循了许多教程，但它们不适用于 OpenCV 2.4.9，所以请帮助我…

原文由 Moonlight 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

查看 pkg-config opencv --libs 的输出以找出您缺少的库，然后将它们添加到您的配置中。

对我来说，图书馆的完整列表是

/usr/lib64/libopencv_calib3d.so.2.4.8
/usr/lib64/libopencv_contrib.so.2.4.8
/usr/lib64/libopencv_core.so.2.4.8
/usr/lib64/libopencv_features2d.so.2.4.8
/usr/lib64/libopencv_flann.so.2.4.8
/usr/lib64/libopencv_gpu.so.2.4.8
/usr/lib64/libopencv_highgui.so.2.4.8
/usr/lib64/libopencv_imgproc.so.2.4.8
/usr/lib64/libopencv_legacy.so.2.4.8
/usr/lib64/libopencv_ml.so.2.4.8
/usr/lib64/libopencv_nonfree.so.2.4.8    # you don't have this one
/usr/lib64/libopencv_objdetect.so.2.4.8
/usr/lib64/libopencv_photo.so.2.4.8      # this one
/usr/lib64/libopencv_stitching.so.2.4.8  # this one
/usr/lib64/libopencv_superres.so.2.4.8   # and this one
/usr/lib64/libopencv_ts.a
/usr/lib64/libopencv_video.so.2.4.8

原文由 Alexey Shmalko 发布，翻译遵循 CC BY-SA 3.0 许可协议