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core: use matlab-style in 2d fftShift

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This commit is contained in:
Vladislav Sovrasov
2017-07-13 13:33:02 +03:00
parent a683a496ea
commit bb0f9d6bc4
2 changed files with 53 additions and 13 deletions
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modules/imgproc/test/test_pc.cpp
+23 -2
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@@ -78,7 +78,7 @@ void CV_PhaseCorrelatorTest::run( int )
Point2d phaseShift = phaseCorrelate(r1, r2, hann);
// test accuracy should be less than 1 pixel...
if((expectedShiftX - phaseShift.x) >= 1 || (expectedShiftY - phaseShift.y) >= 1)
if(std::abs(expectedShiftX - phaseShift.x) >= 1 || std::abs(expectedShiftY - phaseShift.y) >= 1)
{
ts->set_failed_test_info( cvtest::TS::FAIL_BAD_ACCURACY );
}
@@ -86,6 +86,27 @@ void CV_PhaseCorrelatorTest::run( int )
TEST(Imgproc_PhaseCorrelatorTest, accuracy) { CV_PhaseCorrelatorTest test; test.safe_run(); }
TEST(Imgproc_PhaseCorrelatorTest, accuracy_real_img)
{
Mat img = imread(cvtest::TS::ptr()->get_data_path() + "shared/airplane.png", IMREAD_GRAYSCALE);
img.convertTo(img, CV_64FC1);
const int xLen = 129;
const int yLen = 129;
const int xShift = 40;
const int yShift = 14;
Mat roi1 = img(Rect(xShift, yShift, xLen, yLen));
Mat roi2 = img(Rect(0, 0, xLen, yLen));
Mat hann;
createHanningWindow(hann, roi1.size(), CV_64F);
Point2d phaseShift = phaseCorrelate(roi1, roi2, hann);
ASSERT_NEAR(phaseShift.x, (double)xShift, 1.);
ASSERT_NEAR(phaseShift.y, (double)yShift, 1.);
}
TEST(Imgproc_PhaseCorrelatorTest, accuracy_1d_odd_fft) {
Mat r1 = Mat::ones(Size(129, 1), CV_64F)*255; // 129 will be completed to 135 before FFT
Mat r2 = Mat::ones(Size(129, 1), CV_64F)*255;
@@ -100,7 +121,7 @@ TEST(Imgproc_PhaseCorrelatorTest, accuracy_1d_odd_fft) {
Point2d phaseShift = phaseCorrelate(r1, r2);
ASSERT_NEAR(phaseShift.x, (double)xShift, .5);
ASSERT_NEAR(phaseShift.x, (double)xShift, 1.);
}
}