未实现OpenCV SURF功能 [英] OpenCV SURF function is not implemented

问题描述

当我尝试运行示例 find_obj.cpp 或任何OpenCV SURF程序时，我在执行代码时在命令提示符下得到以下错误。项目构建没有错误和警告。我使用的是VS2011测试版，OpenCV 2.4和Windows7。

错误讯息：

  OpenCV Error：未实现函数/ OpenCV是建立没有SURF支持>在未知函数中，文件.. \..\..\src\opencv\modules\legacy\src\features2d.cpp，第77行
  

我试图再次使用Cmake和VS2011在调试模式下构建OpenCV 2.4，然后在IDE中添加了lib路径，但仍然没有结果。 p>

如何解决这个问题？

  #include< opencv2 / objdetect /objdetect.hpp> 
 #include< opencv2 / features2d / features2d.hpp> 
 #include< opencv2 / core / core.hpp> 
 #include< opencv2 / highgui / highgui.hpp> 
 #include< opencv2 / legacy / legacy.hpp> 
 #include< opencv2 / legacy / compat.hpp> 
 #include< opencv2 / flann / flann.hpp> 
 #include< opencv2 / calib3d / calib3d.hpp> 
 #include< opencv2 / nonfree / features2d.hpp> 
 #include< opencv2 / nonfree / nonfree.hpp> 
 
 using namespace std; 
 using namespace cv; 
 int main（）
 {
 cv :: initModule_nonfree（）; //这个行是重要的
 
 IplImage * image1 = cvLoadImage（C：\\\ \\ SURF\\1.jpg）; 
 IplImage * image2 = cvLoadImage（C：\\SURF\\2.jpg）; 
 
 CvMemStorage * memoryBlock = cvCreateMemStorage（）; 
 CvSeq * image1KeyPoints; 
 CvSeq * image1Descriptors; 
 CvSeq * image2KeyPoints; 
 CvSeq * image2Descriptors; 
 
 //只有粗糙度大于500的值被考虑用于关键点
 CvSURFParams params = cvSURFParams（500，1）; 
 cvExtractSURF（image1，0，& image1KeyPoints，& image1Descriptors，memoryBlock，params）; 
 cvExtractSURF（image2，0，& image2KeyPoints，& image2Descriptors，memoryBlock，params）; 
 
 return 0; 
} 
  

解决方案

取自此答案（为什么不google：你问的问题？）：

SIFT和SURF代码在OpenCV v2.4中移动到一个新的模块
nonfree 。确保你正在链接（DLL在Windlows）。在linux中，此库称为 libopencv_nonfree.so 。

When I try to run the sample find_obj.cpp or any OpenCV SURF program I get the following error in command prompt while executing the code. The project builds without errors and warnings. I am using VS2011 beta, OpenCV 2.4 and windows7.

Error message:

OpenCV Error: The function/feature is not implemented < OpenCV was built without SURF support> in unknown function,file ..\..\..\src\opencv\modules\legacy\src\features2d.cpp, line 77

I tried to build the OpenCV 2.4 again using Cmake and then VS2011 in debug mode and then added the lib paths in the IDE, but still no result.

How can I fix that?

    #include <opencv2/objdetect/objdetect.hpp>
    #include <opencv2/features2d/features2d.hpp>
    #include <opencv2/core/core.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/legacy/legacy.hpp>
    #include <opencv2/legacy/compat.hpp>
    #include <opencv2/flann/flann.hpp>
    #include <opencv2/calib3d/calib3d.hpp>
    #include <opencv2/nonfree/features2d.hpp>
    #include <opencv2/nonfree/nonfree.hpp>

using namespace std;
using namespace cv;
int main()
{
    cv::initModule_nonfree();//THIS LINE IS IMPORTANT   

   IplImage *image1 = cvLoadImage("C:\\SURF\\1.jpg"); 
    IplImage *image2 = cvLoadImage("C:\\SURF\\2.jpg");

    CvMemStorage* memoryBlock = cvCreateMemStorage();
    CvSeq* image1KeyPoints;
    CvSeq* image1Descriptors;
    CvSeq* image2KeyPoints;
    CvSeq* image2Descriptors;

    // Only values with a hessian greater than 500 are considered for keypoints
   CvSURFParams params = cvSURFParams(500, 1);
   cvExtractSURF(image1, 0, &image1KeyPoints, &image1Descriptors, memoryBlock, params);
   cvExtractSURF(image2, 0, &image2KeyPoints, &image2Descriptors, memoryBlock, params);

   return 0;
}

解决方案

Taken from this answer (why don't you google your question before asking?):

The SIFT and SURF code was moved in OpenCV v2.4 to a new module called nonfree. Make sure you are linking (DLL in Windlows) to it. In linux this library is called libopencv_nonfree.so.

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