当我尝试运行示例时find_obj.cpp或任何 OpenCV SURF 程序，在执行代码时，我在命令提示符中收到以下错误。该项目构建时没有错误和警告。我使用的是 VS2011 beta、OpenCV 2.4 和 windows7。
错误信息：
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
我尝试使用 Cmake 再次构建 OpenCV 2.4，然后在调试模式下使用 VS2011 构建 OpenCV 2.4，然后在 IDE 中添加 lib 路径，但仍然没有结果。
我该如何解决这个问题？
#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();//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;
}
