I seem to have a linker problem on my code.
The code is:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include <float.h>
#include <limits.h>
#include <time.h>
#include <ctype.h>
#include <iostream>
#include <vector>
#include "opencv/ml.h"
#include "opencv/cvaux.h"
#include "opencv/highgui.h"
#include "opencv/cxcore.h"
#include "opencv/cv.h"
#include "opencv/highgui.h"
using namespace cv;
int main (int argc, char* argv[])
{
// Data for visual representation
int width = 512, height = 512;
Mat image = Mat::zeros(height, width, CV_8UC3);
// Set up training data
float labels[4] = {1.0, -1.0, -1.0, -1.0};
Mat labelsMat(3, 1, CV_32FC1, labels);
float trainingData[4][2] = { {501, 10}, {255, 10}, {501, 255}, {10, 501} };
Mat trainingDataMat(3, 2, CV_32FC1, trainingData);
// Set up SVM's parameters
CvSVMParams params;
params.svm_type = CvSVM::C_SVC;
params.kernel_type = CvSVM::LINEAR;
params.term_crit = cvTermCriteria(CV_TERMCRIT_ITER, 100, 1e-6);
// Train the SVM
CvSVM SVM;
SVM.train(trainingDataMat, labelsMat, Mat(), Mat(), params);
Vec3b green(0,255,0), blue (255,0,0);
// Show the decision regions given by the SVM
for (int i = 0; i < image.rows; ++i)
for (int j = 0; j < image.cols; ++j)
{
Mat sampleMat = (Mat_<float>(1,2) << i,j);
float response = SVM.predict(sampleMat);
if (response == 1)
image.at<Vec3b>(j, i) = green;
else if (response == -1)
image.at<Vec3b>(j, i) = blue;
}
// Show the training data
int thickness = -1;
int lineType = 8;
circle( image, Point(501, 10), 5, Scalar( 0, 0, 0), thickness, lineType);
circle( image, Point(255, 10), 5, Scalar(255, 255, 255), thickness, lineType);
circle( image, Point(501, 255), 5, Scalar(255, 255, 255), thickness, lineType);
circle( image, Point( 10, 501), 5, Scalar(255, 255, 255), thickness, lineType);
// Show support vectors
thickness = 2;
lineType = 8;
int c = SVM.get_support_vector_count();
for (int i = 0; i < c; ++i)
{
const float* v = SVM.get_support_vector(i);
circle( image, Point( (int) v[0], (int) v[1]), 6, Scalar(128, 128, 128), thickness, lineType);
}
imwrite("result.png", image); // save the image
imshow("SVM Simple Example", image); // show it to the user
waitKey(0);
return EXIT_SUCCESS;
}
Here is the error report:
2>SVM.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::deallocate(void)" (?deallocate@Mat@cv@@QAEXXZ) referenced in function "public: void __thiscall cv::Mat::release(void)" (?release@Mat@cv@@QAEXXZ) 2>SVM.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::MatConstIterator::seek(int,bool)" (?seek@MatConstIterator@cv@@QAEXH_N@Z) referenced in function "public: class cv::MatConstIterator & __thiscall cv::MatConstIterator::operator++(void)" (??EMatConstIterator@cv@@QAEAAV01@XZ) 2>SVM.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::copySize(class cv::Mat const &)" (?copySize@Mat@cv@@QAEXABV12@@Z) referenced in function "public: __thiscall cv::Mat::Mat(class cv::Mat const &)" (??0Mat@cv@@QAE@ABV01@@Z) 2>SVM.obj : error LNK2019: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) referenced in function "public: __thiscall cv::Mat::~Mat(void)" (??1Mat@cv@@QAE@XZ) 2>SVM.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::create(int,int const *,int)" (?create@Mat@cv@@QAEXHPBHH@Z) referenced in function "public: void __thiscall cv::Mat::create(int,int,int)" (?create@Mat@cv@@QAEXHHH@Z) 2>SVM.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::MatConstIterator::seek(int const *,bool)" (?seek@MatConstIterator@cv@@QAEXPBH_N@Z) referenced in function "public: __thiscall cv::MatConstIterator::MatConstIterator(class cv::Mat const *)" (??0MatConstIterator@cv@@QAE@PBVMat@1@@Z) 2>SVM.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::convertTo(class cv::_OutputArray const &,int,double,double)const " (?convertTo@Mat@cv@@QBEXABV_OutputArray@2@HNN@Z) referenced in function "public: class cv::Mat_ & _thiscall cv::Mat::operator=(class cv::Mat const &)" (??4?$Mat_@M@cv@@QAEAAV01@ABVMat@1@@Z) 2>SVM.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::_OutputArray::_OutputArray(class cv::Mat &)" (??0_OutputArray@cv@@QAE@AAVMat@1@@Z) referenced in function "public: class cv::Mat_ & _thiscall cv::Mat::operator=(class cv::Mat const &)" (??4?$Mat_@M@cv@@QAEAAV01@ABVMat@1@@Z) 2>SVM.obj : error LNK2019: unresolved external symbol "public: class cv::Mat __thiscall cv::Mat::reshape(int,int,int const *)const " (?reshape@Mat@cv@@QBE?AV12@HHPBH@Z) referenced in function "public: class cv::Mat_ & _thiscall cv::Mat::operator=(class cv::Mat const &)" (??4?$Mat_@M@cv@@QAEAAV01@ABVMat@1@@Z) 2>SVM.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall CvSVM::~CvSVM(void)" (??1CvSVM@@UAE@XZ) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "int __cdecl cv::waitKey(int)" (?waitKey@cv@@YAHH@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "void __cdecl cv::imshow(class std::basic_string,class std::allocator > const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV_InputArray@1@@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "bool __cdecl cv::imwrite(class std::basic_string,class std::allocator > const &,class cv::_InputArray const &,class std::vector > const &)" (?imwrite@cv@@YA_NABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV_InputArray@1@ABV?$vector@HV?$allocator@H@std@@@3@@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::_InputArray::_InputArray(class cv::Mat const &)" (??0_InputArray@cv@@QAE@ABVMat@1@@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: virtual float const * __thiscall CvSVM::get_support_vector(int)const " (?get_support_vector@CvSVM@@UBEPBMH@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: virtual int __thiscall CvSVM::get_support_vector_count(void)const " (?get_support_vector_count@CvSVM@@UBEHXZ) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "void _cdecl cv::circle(class cv::Mat &,class cv::Point,int,class cv::Scalar_ const &,int,int,int)" (?circle@cv@@YAXAAVMat@1@V?$Point_@H@1@HABV?$Scalar_@N@1@HHH@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: virtual float __thiscall CvSVM::predict(class cv::Mat const &,bool)const " (?predict@CvSVM@@UBEMABVMat@cv@@_N@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: virtual bool __thiscall CvSVM::train(class cv::Mat const &,class cv::Mat const &,class cv::Mat const &,class cv::Mat const &,struct CvSVMParams)" (?train@CvSVM@@UAE_NABVMat@cv@@000UCvSVMParams@@@Z) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: __thiscall CvSVM::CvSVM(void)" (??0CvSVM@@QAE@XZ) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: __thiscall CvSVMParams::CvSVMParams(void)" (??0CvSVMParams@@QAE@XZ) referenced in function _main 2>SVM.obj : error LNK2019: unresolved external symbol "public: static class cv::MatExpr __cdecl cv::Mat::zeros(int,int,int)" (?zeros@Mat@cv@@SA?AVMatExpr@2@HHH@Z) referenced in function _main
I have the last all-built version of OpenCV for Windows 7, available at WillowGarage, and I am trying to run this example from the wiki page: link. My compiler is VC++.
I have already seached on Google but I don't find anything working.
Thanks
