为什么SIFT和SURF检测器会崩溃

Question

为什么SIFT和SURF探测器会崩溃?

using namespace std;
using namespace cv;
int main(int argc, char *argv[])
{        
  Mat image = imread("TestImage.jpg");
  // Create smart pointer for SIFT feature detector.
  Ptr<FeatureDetector> featureDetector = FeatureDetector::create("SIFT");
  vector<KeyPoint> keypoints;
  // Detect the keypoints
  featureDetector->detect(image, keypoints); // here crash
  // ...
}

错误为Segmentation fault (core dumped)。我使用OpenCV 2.4.8, gcc 4.9和Ubuntu。如果我使用其他类型的功能，它会正常运行。我错过了什么?

Answer 1

您试过呼叫initModule_nonfree()吗?

#include <opencv2/nonfree/nonfree.hpp>
using namespace std;
using namespace cv;
int main(int argc, char *argv[])
{
  initModule_nonfree();
  Mat image = imread("TestImage.jpg");
  // Create smart pointer for SIFT feature detector.
  Ptr<FeatureDetector> featureDetector = FeatureDetector::create("SIFT");
  vector<KeyPoint> keypoints;
  // Detect the keypoints
  featureDetector->detect(image, keypoints); // here crash
  // ...
}

也，你没有检查指针特征检测器，这可能是空的(因为你没有调用initModule)。