修复使用 OpenCV 的混合 STL 实现

Question

>问题

我正在尝试启动并运行 OpenCV，但我遇到了与这家伙和这家伙相同的问题 - 尝试使用 C++ 接口构建项目时出现链接器错误，但使用 C 接口构建项目。

在第二个链接中，答案是"你混合了STL的不同实现。VC10(用于OpenCV(和STLPort(用于您的代码(。

如何确保我只使用 VC10？(或更高版本(

C 样式(项目生成成功(

我正在使用Visual Studio 2012和OpenCV 3.0

int main( int argc, char** argv )
{
    char* filename = "input.tif";  
    IplImage *img0;
    if( (img0 = cvLoadImage(filename,-1)) == 0 )
       return 0;
    cvNamedWindow( "image", 0 );
    cvShowImage( "image", img0 );
    cvWaitKey(0);  
    cvDestroyWindow("image");
    cvReleaseImage(&img0);
}

C++样式(项目不生成(

int main( int argc, char** argv ) {
    Mat image;
    const string &filename = "input.tif";
    image = imread(filename, IMREAD_COLOR); // Read the file
    if(! image.data ) // Check for invalid input
    {
        std::cout << "Could not open or find the image" << std::endl ;
        return -1;
    }
    namedWindow( "Display window", WINDOW_AUTOSIZE ); // Create a window for display.
    imshow( "Display window", image ); // Show our image inside it.
}

错误：

1>Source.obj : error LNK2019: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) referenced in function "public: __thiscall cv::String::String(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0String@cv@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z)
1>Source.obj : error LNK2019: unresolved external symbol "private: void __thiscall cv::String::deallocate(void)" (?deallocate@String@cv@@AAEXXZ) referenced in function "public: __thiscall cv::String::~String(void)" (??1String@cv@@QAE@XZ)
1>Source.obj : error LNK2019: unresolved external symbol "class cv::Mat __cdecl cv::imread(class cv::String const &,int)" (?imread@cv@@YA?AVMat@1@ABVString@1@H@Z) referenced in function _main
1>Source.obj : error LNK2019: unresolved external symbol "void __cdecl cv::namedWindow(class cv::String const &,int)" (?namedWindow@cv@@YAXABVString@1@H@Z) referenced in function _main
1>Source.obj : error LNK2019: unresolved external symbol "void __cdecl cv::imshow(class cv::String const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABVString@1@ABV_InputArray@1@@Z) referenced in function _main

VS 中的包含和库路径设置

• C/C++/General/extra include Directory： C：\opencv\build\include
• 链接器/常规/附加库目录：C：\opencv\build\x86\vc11\lib
• 链接器/输入/其他依赖项：opencv_calib3d2410d.libopencv_contrib2410d.libopencv_core2410d.libopencv_features2d2410d.libopencv_flann2410d.libopencv_gpu2410d.libopencv_highgui2410d.libopencv_imgproc2410d.libopencv_legacy2410d.libopencv_ml2410d.libopencv_nonfree2410d.libopencv_objdetect2410d.libopencv_ocl2410d.libopencv_photo2410d.libopencv_stitching2410d.libopencv_superres2410d.libopencv_ts2410d.libopencv_video2410d.libopencv_videostab2410d.lib

Answer 1

从聊天中的讨论来看，OP链接到OpenCV 2.4.10而不是OpenCV 3.0。

通过更正链接库，问题得到解决。