#include <opencv2/gpu/gpu.hpp>

int main(int argc, char *argv[])

{

  int cols = 50;

  int rows = 5000;

  cv::Mat mat1 = cv::Mat::ones(cols, rows, CV_8UC1);

  cv::Mat mat2 = cv::Mat::ones(cols, rows, CV_8UC1);

  cv::gpu::GpuMat gpuMat1(mat1);

  cv::gpu::GpuMat gpuMat2(mat2);

  cv::gpu::BruteForceMatcher_GPU<cv::Hamming> matcher;

  std::vector<cv::DMatch> matches;

  while(true) {

    matcher.match(gpuMat1, gpuMat2, matches);

    matches.clear();

  }

  return 0;

}