blob detction opencv249錯誤

Question

我正在運行此代碼，並且出現錯誤！

#include "opencv\opencv.hpp" 
    using namespace cv; 
    using namespace std; 
    int main(int argc, char** argv) { 
    Mat im = imread("blob.jpg", CV_LOAD_IMAGE_GRAYSCALE); 
    SimpleBlobDetector::Params params; 
    params.minThreshold = 10; 
    params.maxThreshold = 200; 
    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); 
    std::vector<KeyPoint> keypoints; 
    detector.detect(im, keypoints); 
    Mat im_with_keypoints; 
    drawKeypoints(im, keypoints, im_with_keypoints, Scalar(0,0,255), DrawMatchesFlags::DRAW_RICH_KEYPOINTS); 
    imshow("keypoints", im_with_keypoints); 
    waitKey(0); 
    } 

我得到的錯誤是

1>test.cpp(25): warning C4305: '=' : truncation from 'double' to 'float' 
1>test.cpp(29): warning C4305: '=' : truncation from 'double' to 'float' 
1>test.cpp(33): warning C4305: '=' : truncation from 'double' to 'float' 
1>test.obj : error LNK2001: unresolved external symbol "public: void __thiscall cv::FeatureDetector::detect(class cv::Mat const &,class std::vector<class cv::KeyPoint,class std::allocator<class cv::KeyPoint> > &,class cv::Mat const &)const " (?detect@FeatureDetector@cv@@QBEXABVMat@2@AAV?$vector@VKeyPoint@cv@@V?$allocator@VKeyPoint@cv@@@std@@@std@@0@Z) 
1>test.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall cv::FeatureDetector::~FeatureDetector(void)" (??1FeatureDetector@cv@@UAE@XZ) 
1>test.obj : error LNK2001: unresolved external symbol "void __cdecl cv::drawKeypoints(class cv::Mat const &,class std::vector<class cv::KeyPoint,class std::allocator<class cv::KeyPoint> > const &,class cv::Mat &,class cv::Scalar_<double> const &,int)" (?drawKeypoints@cv@@YAXABVMat@1@ABV?$vector@VKeyPoint@cv@@V?$allocator@VKeyPoint@cv@@@std@@@std@@AAV21@ABV?$Scalar_@N@1@H@Z) 
1>test.obj : error LNK2001: unresolved external symbol "public: __thiscall cv::SimpleBlobDetector::Params::Params(void)" (??0Params@SimpleBlobDetector@cv@@QAE@XZ) 
1>test.obj : error LNK2001: unresolved external symbol "public: __thiscall cv::SimpleBlobDetector::SimpleBlobDetector(struct cv::SimpleBlobDetector::Params const &)" (??0SimpleBlobDetector@cv@@QAE@ABUParams@01@@Z) 

我檢查物業經理和所有設置好，進出口運行的OpenCV 249和VC 2010 感謝

Answer 1

您所面臨的鏈接問題這與您的代碼中的問題無關。 閱讀本指南，瞭解如何正確鏈接OpenCV與VS.NET：http://docs.opencv.org/2.4/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html