按颜色过滤时，OpenCV blob检测段错误

Question

我在OpenCV附带的SimpleBlobDetector工具中使用filterByColor功能时遇到了问题。 make并没有给我任何错误，但是当我尝试运行程序时，它会在blobme.detect（）处发生段错误。

当我使用filterByArea时它工作正常，它只是filterByColor让我头疼。

#include <opencv2/features2d/features2d.hpp>  
#include <opencv2/opencv.hpp>
#include <iostream>

#define ACTIVE_CHANNEL 2

int main(int argc, char* argv[])
{
  if (argc != 3)
  {
    std::cout << "./image_proc <file> <thresh> (-1 for default)" <<    std::endl;
    return -1;
  }

  cv::Mat test_im = cv::imread(argv[1], CV_LOAD_IMAGE_COLOR);
  cv::Mat hsvim, outim, channels[3], descriptor;
  std::vector<cv::KeyPoint> keypoints;

  // Convert to HSV
  cv::cvtColor(test_im, hsvim, CV_RGB2HSV); 
  cv::split(hsvim, channels);

  cv::SimpleBlobDetector::Params params;
  params.filterByInertia = false;
  params.filterByConvexity = false;
  params.filterByColor = true;
  params.filterByCircularity = false;
  params.filterByArea = false;
  params.blobColor = 255;
  //params.minArea = 100.0f;
  //params.maxArea = 500.0f;

  // Trying to use blob detector
  cv::SimpleBlobDetector blobme(params);

  blobme.detect(channels[ACTIVE_CHANNEL], keypoints);

  // Print keypoints
  cv::drawKeypoints(channels[ACTIVE_CHANNEL], keypoints, outim);

  // Display
  cv::namedWindow("Display window", cv::WINDOW_AUTOSIZE);
  cv::imwrite("imout.jpg", outim);
  cv::imshow("Display window", outim);

  cv::waitKey(0);
  return 0;
}