OpenCV：为什么SIFT和SURF检测器崩溃？ [英] OpenCV: Why SIFT and SURF detectors crashes?

问题描述

为什么SIFT和SURF检测器崩溃？

Why do the SIFT and SURF detectors crash?

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
  // ...
}

分段故障（内核转储）。我使用OpenCV 2.4.8，gcc 4.9和Ubuntu。如果我使用其他类型的功能，它运行正常。

The error is Segmentation fault (core dumped). I use OpenCV 2.4.8, gcc 4.9 and Ubuntu. If I use the other types of features it runs normally. What am I missing?

推荐答案

您尝试调用 initModule_nonfree（） ？

Have you tried to call initModule_nonfree()?

#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
  // ...
}

didnt检查指针featureDetector可能为null（因为你没有调用initModule）。

Also, you didnt check the pointer featureDetector which is probably null (since you have not called initModule).

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