main.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall CvSVM::~CvSVM(void)" (??1CvSVM@@UAE@XZ) referenced in function _main 1>main.obj : error LNK2019: unresolved external symbol "int __cdecl cv::waitKey(int)" (?waitKey@cv@@YAHH@Z) referenced in function _main 1>main.obj : error LNK2019: unresolved external symbol "void __cdecl cv::imshow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV_InputArray@1@@Z) referenced in function _main 1>main.obj : error LNK2019: unresolved external symbol "bool __cdecl cv::imwrite(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class cv::_InputArray const &,class std::vector<int,class std::allocator<int> > const &)" (?imwrite@cv@@YA_NABV?$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 1>main.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 1>main.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 1>main.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 1>main.obj : error LNK2019: unresolved external symbol "void __cdecl cv::circle(class cv::Mat &,class cv::Point_<int>,int,class cv::Scalar_<double> const &,int,int,int)" (?circle@cv@@YAXAAVMat@1@V?$Point_@H@1@HABV?$Scalar_@N@1@HHH@Z) referenced in function _main 1>main.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 1>main.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 1>main.obj : error LNK2019: unresolved external symbol "public: __thiscall CvSVM::CvSVM(void)" (??0CvSVM@@QAE@XZ) referenced in function _main 1>main.obj : error LNK2019: unresolved external symbol "public: __thiscall CvSVMParams::CvSVMParams(void)" (??0CvSVMParams@@QAE@XZ) referenced in function _main 1>main.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 1>main.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) 1>main.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall cv::Exception::~Exception(void)" (??1Exception@cv@@UAE@XZ) referenced in function "public: __thiscall cv::Mat::Mat(int,int,int,void *,unsigned int)" (??0Mat@cv@@QAE@HHHPAXI@Z) 1>main.obj : error LNK2019: unresolved external symbol "void __cdecl cv::error(class cv::Exception const &)" (?error@cv@@YAXABVException@1@@Z) referenced in function "public: __thiscall cv::Mat::Mat(int,int,int,void *,unsigned int)" (??0Mat@cv@@QAE@HHHPAXI@Z) 1>main.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::Exception::Exception(int,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int)" (??0Exception@cv@@QAE@HABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@00H@Z) referenced in function "public: __thiscall cv::Mat::Mat(int,int,int,void *,unsigned int)" (??0Mat@cv@@QAE@HHHPAXI@Z) 1>main.obj : error LNK2019: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) referenced in function "public: __thiscall cv::Mat::~Mat(void)" (??1Mat@cv@@QAE@XZ) 1>main.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::deallocate(void)" (?deallocate@Mat@cv@@QAEXXZ) referenced in function "public: void __thiscall cv::Mat::release(void)" (?release@Mat@cv@@QAEXXZ) 1>main.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::create(int,int const *,int)" (?create@Mat@cv@@QAEXHPBHH@Z) referenced in function "public: void __thiscall cv::Mat::create(int,int,int)" (?create@Mat@cv@@QAEXHHH@Z) 1>main.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::MatConstIterator::seek(int,bool)" (?seek@MatConstIterator@cv@@QAEXH_N@Z) referenced in function "public: class cv::MatConstIterator & __thiscall cv::MatConstIterator::operator++(void)" (??EMatConstIterator@cv@@QAEAAV01@XZ) 1>main.obj : error LNK2019: unresolved external symbol "public: void __thiscall cv::Mat::convertTo(class cv::_OutputArray const &,int,double,double)const " (?convertTo@Mat@cv@@QBEXABV_OutputArray@2@HNN@Z) referenced in function "public: class cv::Mat_<float> & __thiscall cv::Mat_<float>::operator=(class cv::Mat const &)" (??4?$Mat_@M@cv@@QAEAAV01@ABVMat@1@@Z) 1>main.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_<float> & __thiscall cv::Mat_<float>::operator=(class cv::Mat const &)" (??4?$Mat_@M@cv@@QAEAAV01@ABVMat@1@@Z) 1>main.obj : error LNK2019: unresolved external symbol "public: class cv::Mat __thiscall cv::Mat::reshape(int,int,int const *)const " (?reshape@Mat@cv@@QBE?AV12@HHPBH@Z) referenced in function "public: class cv::Mat_<float> & __thiscall cv::Mat_<float>::operator=(class cv::Mat const &)" (??4?$Mat_@M@cv@@QAEAAV01@ABVMat@1@@Z) 1>main.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) 1>F:\MyProject\SVM\OpenCV\SVMexample\Debug\SVMexample.exe : fatal error LNK1120: 25 unresolved externals
原来在在Link里没有把以下的库包含进去。
opencv_core220d.lib
opencv_highgui220d.lib
opencv_video220d.lib
opencv_ml220d.lib
opencv_legacy220d.lib
opencv_imgproc220d.lib