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     42 
     43 #include "test_precomp.hpp"
     44 
     45 using namespace cv;
     46 using namespace std;
     47 
     48 namespace cvtest
     49 {
     50 
     51 /// phase correlation
     52 class CV_PhaseCorrelatorTest : public cvtest::ArrayTest
     53 {
     54 public:
     55     CV_PhaseCorrelatorTest();
     56 protected:
     57     void run( int );
     58 };
     59 
     60 CV_PhaseCorrelatorTest::CV_PhaseCorrelatorTest() {}
     61 
     62 void CV_PhaseCorrelatorTest::run( int )
     63 {
     64     ts->set_failed_test_info(cvtest::TS::OK);
     65 
     66     Mat r1 = Mat::ones(Size(129, 128), CV_64F);
     67     Mat r2 = Mat::ones(Size(129, 128), CV_64F);
     68 
     69     double expectedShiftX = -10.0;
     70     double expectedShiftY = -20.0;
     71 
     72     // draw 10x10 rectangles @ (100, 100) and (90, 80) should see ~(-10, -20) shift here...
     73     cv::rectangle(r1, Point(100, 100), Point(110, 110), Scalar(0, 0, 0), CV_FILLED);
     74     cv::rectangle(r2, Point(90, 80), Point(100, 90), Scalar(0, 0, 0), CV_FILLED);
     75 
     76     Mat hann;
     77     createHanningWindow(hann, r1.size(), CV_64F);
     78     Point2d phaseShift = phaseCorrelate(r1, r2, hann);
     79 
     80     // test accuracy should be less than 1 pixel...
     81     if((expectedShiftX - phaseShift.x) >= 1 || (expectedShiftY - phaseShift.y) >= 1)
     82     {
     83          ts->set_failed_test_info( cvtest::TS::FAIL_BAD_ACCURACY );
     84     }
     85 }
     86 
     87 TEST(Imgproc_PhaseCorrelatorTest, accuracy) { CV_PhaseCorrelatorTest test; test.safe_run(); }
     88 
     89 }
     90