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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#include "test_precomp.hpp"
#include "opencv2/stitching/warpers.hpp"
namespace opencv_test { namespace {
class ReprojectionTest : public ::testing::Test {
protected:
const size_t TEST_COUNT = 15;
Mat K, R;
RNG rng = RNG(0);
ReprojectionTest()
{
K = Mat::eye(3, 3, CV_32FC1);
float angle = (float)(30.0 * CV_PI / 180.0);
float rotationMatrix[9] = {
(float)cos(angle), (float)sin(angle), 0,
(float)-sin(angle), (float)cos(angle), 0,
0, 0, 1
};
Mat(3, 3, CV_32FC1, rotationMatrix).copyTo(R);
}
void TestReprojection(Ptr<detail::RotationWarper> warper, Point2f pt) {
Point2f projected_pt = warper->warpPoint(pt, K, R);
Point2f reprojected_pt = warper->warpPointBackward(projected_pt, K, R);
EXPECT_NEAR(pt.x, reprojected_pt.x, float( 1e-5));
EXPECT_NEAR(pt.y, reprojected_pt.y, float( 1e-5));
}
};
TEST_F(ReprojectionTest, PlaneWarper)
{
Ptr<WarperCreator> creator = makePtr<PlaneWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, AffineWarper)
{
Ptr<WarperCreator> creator = makePtr<AffineWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, CylindricalWarper)
{
Ptr<WarperCreator> creator = makePtr<CylindricalWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, SphericalWarper)
{
Ptr<WarperCreator> creator = makePtr<SphericalWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, FisheyeWarper)
{
Ptr<WarperCreator> creator = makePtr<FisheyeWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, StereographicWarper)
{
Ptr<WarperCreator> creator = makePtr<StereographicWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, CompressedRectilinearWarper)
{
Ptr<WarperCreator> creator = makePtr<CompressedRectilinearWarper>(1.5f, 1.0f);
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, CompressedRectilinearPortraitWarper)
{
Ptr<WarperCreator> creator = makePtr<CompressedRectilinearPortraitWarper>(1.5f, 1.0f);
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, PaniniWarper)
{
Ptr<WarperCreator> creator = makePtr<PaniniWarper>(1.5f, 1.0f);
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, PaniniPortraitWarper)
{
Ptr<WarperCreator> creator = makePtr<PaniniPortraitWarper>(1.5f, 1.0f);
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, MercatorWarper)
{
Ptr<WarperCreator> creator = makePtr<MercatorWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
TEST_F(ReprojectionTest, TransverseMercatorWarper)
{
Ptr<WarperCreator> creator = makePtr<TransverseMercatorWarper>();
for (size_t i = 0; i < TEST_COUNT; ++i) {
TestReprojection(creator->create(1), Point2f(rng.uniform(-1.f, 1.f), rng.uniform(-1.f, 1.f)));
}
}
}} // namespace
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