undefiniert Referenzfehler bei der Verwendung von OpenCV: BlobDetector

Question

Ich erhalte die folgenden Fehler, wenn ich versuche, mein Programm zu kompilieren opencv mit Blobs erkennen:

11:47:34 **** Incremental Build of configuration Debug for project testOpencv 
Info: Internal Builder is used for build 
g++ "-IC:\\Development\\opencv\\build\\include" -O0 -g3 -Wall -c -fmessage-  length=0 -o "src\\testOpencv.o" "..\\src\\testOpencv.cpp" 
g++ "-LC:\\Development\\opencv\\MINGW\\x86\\bin" -o testOpencv.exe "src\\testOpencv.o" -llibopencv_calib3d2410 -llibopencv_contrib2410 - llibopencv_core2410 -llibopencv_flann2410 -llibopencv_gpu2410 - llibopencv_highgui2410 -llibopencv_imgproc2410 -llibopencv_ml2410 - llibopencv_legacy2410 -llibopencv_nonfree2410 -llibopencv_objdetect2410 - llibopencv_ocl2410 -llibopencv_photo2410 -llibopencv_stitching2410 - llibopencv_superres2410 -llibopencv_video2410 -llibopencv_videostab2410 - lopencv_ffmpeg2410 -llibopencv_ml2410 
src\testOpencv.o: In function `main': 
C:\Development\Workspace\testOpencv\Debug/../src/testOpencv.cpp:98: undefined  reference to `cv::SimpleBlobDetector::Params::Params()' 
C:\Development\Workspace\testOpencv\Debug/../src/testOpencv.cpp:110: undefined reference to  `cv::SimpleBlobDetector::SimpleBlobDetector(cv::SimpleBlobDetector::Params const&)' 
C:\Development\Workspace\testOpencv\Debug/../src/testOpencv.cpp:113: undefined reference to `cv::FeatureDetector::detect(cv::Mat const&, std::vector<cv::KeyPoint, std::allocator<cv::KeyPoint> >&, cv::Mat const&) const' 
C:\Development\Workspace\testOpencv\Debug/../src/testOpencv.cpp:117: undefined reference to `cv::drawKeypoints(cv::Mat const&, std::vector<cv::KeyPoint, std::allocator<cv::KeyPoint> > const&, cv::Mat&, cv::Scalar_<double> const&, int)' 
src\testOpencv.o: In function `ZN2cv18SimpleBlobDetectorD1Ev': 
C:/Development/opencv/build/include/opencv2/features2d/features2d.hpp:615: undefined reference to `vtable for cv::SimpleBlobDetector' 
C:/Development/opencv/build/include/opencv2/features2d/features2d.hpp:615:undefined reference to `vtable for cv::SimpleBlobDetector' 
C:/Development/opencv/build/include/opencv2/features2d/features2d.hpp:615:undefined reference to `VTT for cv::SimpleBlobDetector' 
C:/Development/opencv/build/include/opencv2/features2d/features2d.hpp:615: undefined reference to `cv::FeatureDetector::~FeatureDetector()'collect2.exe: error: ld returned 1 exit status 

11:47:38 Build Finished (took 4s.111ms) > 

ich in Eclipse bin kompilieren, Windows 7 - 64 Bit, und ich habe versucht, die umgekehrte Reihenfolge für die Aufnahme der Bibliotheken wie in diesem Link-OpenCV undefined references. Hier sind meine Dateien-

#include "opencv2/calib3d/calib3d.hpp" 
#include "opencv2/features2d/features2d.hpp" 
#include "opencv2/imgproc/imgproc.hpp" 
#include "opencv2/core/core.hpp" 
#include "opencv2/highgui/highgui.hpp" 
#include "opencv/cv.h" 
#include "opencv/highgui.h" 
#include <iostream> 
string imageName("image/Picture7.jpg"); 
if(argc > 1) 
{ 
    imageName = argv[1]; 
} 

Mat image,grey_image, src; 
src = imread("image/lena512color.jpg"); 

image = imread(imageName.c_str(), IMREAD_COLOR); 

//resizing to make it a normal size 
resize(image, image, src.size()); 

namedWindow("Display window", WINDOW_AUTOSIZE); 
imshow("Display window", image); 
// to display the image in greyscale 
cvtColor(image, grey_image, CV_RGB2GRAY);//CV_BGR2GRAY); 
imwrite("savedImage/Gray_image.jpg", grey_image); 
namedWindow("Gray window", WINDOW_AUTOSIZE); 
imshow("Gray window", grey_image); 
// Reduce the noise so we avoid false circle detection 
GaussianBlur(grey_image, grey_image, Size(9, 9), 2, 2); 
SimpleBlobDetector::Params params; 
params.maxThreshold= 200; 
params.minThreshold = 10; 
params.filterByArea= true; 
params.minArea = 1500; 
params.filterByCircularity= true; 
params.minCircularity = 0.1; 
params.filterByConvexity= true; 
params.minConvexity = 0.87; 
params.filterByInertia= true; 
params.minInertiaRatio= 0.01; 

SimpleBlobDetector detector(params); 

vector<KeyPoint> keypoints; 
detector.detect(grey_image, keypoints); 

//Draw detected blobs as red circles 
Mat blob_circles; 
drawKeypoints(grey_image, keypoints, blob_circles,Scalar(0,0,255), DrawMatchesFlags:: DRAW_RICH_KEYPOINTS); 
imshow("Keypoints", blob_circles); 

waitKey(0); 
return 0; 
} 

umfassen Wie vermeide ich diese Fehler?

Answer 1

In Ihrer Linker-Option: fügen Sie -llibopencv_feature2d2410.lib, -llibopencv_objdetect2410.lib entsprechend dem Namen Ihrer opencv Version hinzu.

Auch Pfad lib scheint nicht ok:

"-LC:\\Development\\opencv\\MINGW\\x86\\bin""-LC:\\Development\\opencv\\MINGW\\x86\\lib"