OpenCV_4.2.0/opencv_contrib-4.2.0/modules/reg/test/test_reg.cpp

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#include "test_precomp.hpp"
namespace opencv_test { namespace {
#define REG_DEBUG_OUTPUT 0
class RegTest : public testing::Test
{
public:
void loadImage(int dstDataType = CV_32FC3);
void testShift();
void testEuclidean();
void testSimilarity();
void testAffine();
void testProjective();
private:
Mat img1;
};
void RegTest::testShift()
{
Mat img2;
// Warp original image
Vec<double, 2> shift(5., 5.);
MapShift mapTest(shift);
mapTest.warp(img1, img2);
// Register
Ptr<Mapper> mapper = makePtr<MapperGradShift>();
MapperPyramid mappPyr(mapper);
Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
// Print result
Ptr<MapShift> mapShift = MapTypeCaster::toShift(mapPtr);
#if REG_DEBUG_OUTPUT
cout << endl << "--- Testing shift mapper ---" << endl;
cout << Mat(shift) << endl;
cout << Mat(mapShift->getShift()) << endl;
#endif
// Check accuracy
Ptr<Map> mapInv(mapShift->inverseMap());
mapTest.compose(mapInv);
double shNorm = cv::norm(mapTest.getShift());
EXPECT_LE(shNorm, 0.1);
}
void RegTest::testEuclidean()
{
Mat img2;
// Warp original image
double theta = 3*CV_PI/180;
double cosT = cos(theta);
double sinT = sin(theta);
Matx<double, 2, 2> linTr(cosT, -sinT, sinT, cosT);
Vec<double, 2> shift(5., 5.);
MapAffine mapTest(linTr, shift);
mapTest.warp(img1, img2);
// Register
Ptr<Mapper> mapper = makePtr<MapperGradEuclid>();
MapperPyramid mappPyr(mapper);
Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
// Print result
Ptr<MapAffine> mapAff = MapTypeCaster::toAffine(mapPtr);
#if REG_DEBUG_OUTPUT
cout << endl << "--- Testing Euclidean mapper ---" << endl;
cout << Mat(linTr) << endl;
cout << Mat(shift) << endl;
cout << Mat(mapAff->getLinTr()) << endl;
cout << Mat(mapAff->getShift()) << endl;
#endif
// Check accuracy
Ptr<Map> mapInv(mapAff->inverseMap());
mapTest.compose(mapInv);
double shNorm = cv::norm(mapTest.getShift());
EXPECT_LE(shNorm, 0.1);
double linTrNorm = cv::norm(mapTest.getLinTr());
EXPECT_LE(linTrNorm, sqrt(2.) + 0.01);
EXPECT_GE(linTrNorm, sqrt(2.) - 0.01);
}
void RegTest::testSimilarity()
{
Mat img2;
// Warp original image
double theta = 3*CV_PI/180;
double scale = 0.95;
double a = scale*cos(theta);
double b = scale*sin(theta);
Matx<double, 2, 2> linTr(a, -b, b, a);
Vec<double, 2> shift(5., 5.);
MapAffine mapTest(linTr, shift);
mapTest.warp(img1, img2);
// Register
Ptr<Mapper> mapper = makePtr<MapperGradSimilar>();
MapperPyramid mappPyr(mapper);
Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
// Print result
Ptr<MapAffine> mapAff = MapTypeCaster::toAffine(mapPtr);
#if REG_DEBUG_OUTPUT
cout << endl << "--- Testing similarity mapper ---" << endl;
cout << Mat(linTr) << endl;
cout << Mat(shift) << endl;
cout << Mat(mapAff->getLinTr()) << endl;
cout << Mat(mapAff->getShift()) << endl;
#endif
// Check accuracy
Ptr<Map> mapInv(mapAff->inverseMap());
mapTest.compose(mapInv);
double shNorm = cv::norm(mapTest.getShift());
EXPECT_LE(shNorm, 0.1);
double linTrNorm = cv::norm(mapTest.getLinTr());
EXPECT_LE(linTrNorm, sqrt(2.) + 0.01);
EXPECT_GE(linTrNorm, sqrt(2.) - 0.01);
}
void RegTest::testAffine()
{
Mat img2;
// Warp original image
Matx<double, 2, 2> linTr(1., 0.1, -0.01, 1.);
Vec<double, 2> shift(1., 1.);
MapAffine mapTest(linTr, shift);
mapTest.warp(img1, img2);
// Register
Ptr<Mapper> mapper = makePtr<MapperGradAffine>();
MapperPyramid mappPyr(mapper);
Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
// Print result
Ptr<MapAffine> mapAff = MapTypeCaster::toAffine(mapPtr);
#if REG_DEBUG_OUTPUT
cout << endl << "--- Testing affine mapper ---" << endl;
cout << Mat(linTr) << endl;
cout << Mat(shift) << endl;
cout << Mat(mapAff->getLinTr()) << endl;
cout << Mat(mapAff->getShift()) << endl;
#endif
// Check accuracy
Ptr<Map> mapInv(mapAff->inverseMap());
mapTest.compose(mapInv);
double shNorm = cv::norm(mapTest.getShift());
EXPECT_LE(shNorm, 0.1);
double linTrNorm = cv::norm(mapTest.getLinTr());
EXPECT_LE(linTrNorm, sqrt(2.) + 0.01);
EXPECT_GE(linTrNorm, sqrt(2.) - 0.01);
}
void RegTest::testProjective()
{
Mat img2;
// Warp original image
Matx<double, 3, 3> projTr(1., 0., 0., 0., 1., 0., 0.0001, 0.0001, 1);
MapProjec mapTest(projTr);
mapTest.warp(img1, img2);
// Register
Ptr<Mapper> mapper = makePtr<MapperGradProj>();
MapperPyramid mappPyr(mapper);
Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
// Print result
Ptr<MapProjec> mapProj = MapTypeCaster::toProjec(mapPtr);
mapProj->normalize();
#if REG_DEBUG_OUTPUT
cout << endl << "--- Testing projective transformation mapper ---" << endl;
cout << Mat(projTr) << endl;
cout << Mat(mapProj->getProjTr()) << endl;
#endif
// Check accuracy
Ptr<Map> mapInv(mapProj->inverseMap());
mapTest.compose(mapInv);
double projNorm = cv::norm(mapTest.getProjTr());
EXPECT_LE(projNorm, sqrt(3.) + 0.01);
EXPECT_GE(projNorm, sqrt(3.) - 0.01);
}
void RegTest::loadImage(int dstDataType)
{
const string imageName = cvtest::TS::ptr()->get_data_path() + "reg/home.png";
img1 = imread(imageName, -1);
ASSERT_TRUE(!img1.empty());
img1.convertTo(img1, dstDataType);
}
TEST_F(RegTest, shift)
{
loadImage();
testShift();
}
TEST_F(RegTest, euclidean)
{
loadImage();
testEuclidean();
}
TEST_F(RegTest, similarity)
{
loadImage();
testSimilarity();
}
TEST_F(RegTest, affine)
{
loadImage();
testAffine();
}
TEST_F(RegTest, projective)
{
loadImage();
testProjective();
}
TEST_F(RegTest, projective_dt64fc3)
{
loadImage(CV_64FC3);
testProjective();
}
TEST_F(RegTest, projective_dt64fc1)
{
loadImage(CV_64FC1);
testProjective();
}
}} // namespace