text: #include "perf_precomp.hpp"
  
  using namespace std;
  using namespace cv;
  using namespace perf;
  using std::tr1::make_tuple;
  using std::tr1::get;
  
  CV_ENUM(MethodType, TM_SQDIFF, TM_SQDIFF_NORMED, TM_CCORR, TM_CCORR_NORMED, TM_CCOEFF, TM_CCOEFF_NORMED)
  
  typedef std::tr1::tuple<Size, Size, MethodType> ImgSize_TmplSize_Method_t;
  typedef perf::TestBaseWithParam<ImgSize_TmplSize_Method_t> ImgSize_TmplSize_Method;
  
  PERF_TEST_P(ImgSize_TmplSize_Method, matchTemplateSmall,
              testing::Combine(
                  testing::Values(szSmall128, cv::Size(320, 240),
                                  cv::Size(640, 480), cv::Size(800, 600),
                                  cv::Size(1024, 768), cv::Size(1280, 1024)),
                  testing::Values(cv::Size(12, 12), cv::Size(28, 9),
                                  cv::Size(8, 30), cv::Size(16, 16)),
                  MethodType::all()
                  )
              )
  {
      Size imgSz = get<0>(GetParam());
      Size tmplSz = get<1>(GetParam());
      int method = get<2>(GetParam());
  
      Mat img(imgSz, CV_8UC1);
      Mat tmpl(tmplSz, CV_8UC1);
      Mat result(imgSz - tmplSz + Size(1,1), CV_32F);
  
      declare
          .in(img, WARMUP_RNG)
          .in(tmpl, WARMUP_RNG)
          .out(result)
          .time(30);
  
      TEST_CYCLE() matchTemplate(img, tmpl, result, method);
  
      bool isNormed =
          method == TM_CCORR_NORMED ||
          method == TM_SQDIFF_NORMED ||
          method == TM_CCOEFF_NORMED;
      double eps = isNormed ? 1e-5
          : 255 * 255 * tmpl.total() * 1e-6;
  
      SANITY_CHECK(result, eps);
  }
  
  PERF_TEST_P(ImgSize_TmplSize_Method, matchTemplateBig,
              testing::Combine(
                  testing::Values(cv::Size(1280, 1024)),
                  testing::Values(cv::Size(1260, 1000), cv::Size(1261, 1013)),
                  MethodType::all()
                  )
      )
  {
      Size imgSz = get<0>(GetParam());
      Size tmplSz = get<1>(GetParam());
      int method = get<2>(GetParam());
  
      Mat img(imgSz, CV_8UC1);
      Mat tmpl(tmplSz, CV_8UC1);
      Mat result(imgSz - tmplSz + Size(1,1), CV_32F);
  
      declare
          .in(img, WARMUP_RNG)
          .in(tmpl, WARMUP_RNG)
          .out(result)
          .time(30);
  
      TEST_CYCLE() matchTemplate(img, tmpl, result, method);
  
      bool isNormed =
          method == TM_CCORR_NORMED ||
          method == TM_SQDIFF_NORMED ||
          method == TM_CCOEFF_NORMED;
      double eps = isNormed ? 1e-6
          : 255.0 * 255.0 * (double)tmpl.total() * 1e-6;
  
      SANITY_CHECK(result, eps);
  }
  