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128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "test_precomp.hpp"
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using namespace cv;
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using namespace std;
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namespace cvtest
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{
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/// phase correlation
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class CV_PhaseCorrelatorTest : public cvtest::ArrayTest
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{
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public:
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CV_PhaseCorrelatorTest();
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protected:
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void run( int );
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};
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CV_PhaseCorrelatorTest::CV_PhaseCorrelatorTest() {}
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void CV_PhaseCorrelatorTest::run( int )
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{
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ts->set_failed_test_info(cvtest::TS::OK);
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Mat r1 = Mat::ones(Size(129, 128), CV_64F);
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Mat r2 = Mat::ones(Size(129, 128), CV_64F);
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double expectedShiftX = -10.0;
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double expectedShiftY = -20.0;
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// draw 10x10 rectangles @ (100, 100) and (90, 80) should see ~(-10, -20) shift here...
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cv::rectangle(r1, Point(100, 100), Point(110, 110), Scalar(0, 0, 0), CV_FILLED);
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cv::rectangle(r2, Point(90, 80), Point(100, 90), Scalar(0, 0, 0), CV_FILLED);
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Mat hann;
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createHanningWindow(hann, r1.size(), CV_64F);
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Point2d phaseShift = phaseCorrelate(r1, r2, hann);
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// test accuracy should be less than 1 pixel...
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if(std::abs(expectedShiftX - phaseShift.x) >= 1 || std::abs(expectedShiftY - phaseShift.y) >= 1)
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{
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ts->set_failed_test_info( cvtest::TS::FAIL_BAD_ACCURACY );
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}
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}
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TEST(Imgproc_PhaseCorrelatorTest, accuracy) { CV_PhaseCorrelatorTest test; test.safe_run(); }
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TEST(Imgproc_PhaseCorrelatorTest, accuracy_real_img)
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{
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Mat img = imread(cvtest::TS::ptr()->get_data_path() + "shared/airplane.png", IMREAD_GRAYSCALE);
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img.convertTo(img, CV_64FC1);
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const int xLen = 129;
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const int yLen = 129;
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const int xShift = 40;
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const int yShift = 14;
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Mat roi1 = img(Rect(xShift, yShift, xLen, yLen));
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Mat roi2 = img(Rect(0, 0, xLen, yLen));
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Mat hann;
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createHanningWindow(hann, roi1.size(), CV_64F);
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Point2d phaseShift = phaseCorrelate(roi1, roi2, hann);
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ASSERT_NEAR(phaseShift.x, (double)xShift, 1.);
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ASSERT_NEAR(phaseShift.y, (double)yShift, 1.);
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}
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TEST(Imgproc_PhaseCorrelatorTest, accuracy_1d_odd_fft) {
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Mat r1 = Mat::ones(Size(129, 1), CV_64F)*255; // 129 will be completed to 135 before FFT
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Mat r2 = Mat::ones(Size(129, 1), CV_64F)*255;
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const int xShift = 10;
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for(int i = 6; i < 20; i++)
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{
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r1.at<double>(i) = 1;
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r2.at<double>(i + xShift) = 1;
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}
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Point2d phaseShift = phaseCorrelate(r1, r2);
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ASSERT_NEAR(phaseShift.x, (double)xShift, 1.);
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}
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}
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