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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"
namespace opencv_test { namespace {
const Size img_size(640, 480);
const int FLD_TEST_SEED = 0x134679;
const int EPOCHS = 20;
class FLDBase : public testing::Test
{
public:
FLDBase() { }
protected:
Mat test_image;
vector<Vec4f> lines;
RNG rng;
int passedtests;
void GenerateWhiteNoise(Mat& image);
void GenerateConstColor(Mat& image);
void GenerateLines(Mat& image, const unsigned int numLines);
void GenerateEdgeLines(Mat& image, const unsigned int numLines);
void GenerateBrokenLines(Mat& image, const unsigned int numLines);
void GenerateRotatedRect(Mat& image);
virtual void SetUp();
};
class ximgproc_FLD: public FLDBase
{
public:
ximgproc_FLD() { }
protected:
};
void FLDBase::GenerateWhiteNoise(Mat& image)
{
image = Mat(img_size, CV_8UC1);
rng.fill(image, RNG::UNIFORM, 0, 256);
}
void FLDBase::GenerateConstColor(Mat& image)
{
image = Mat(img_size, CV_8UC1, Scalar::all(rng.uniform(0, 256)));
}
void FLDBase::GenerateLines(Mat& image, const unsigned int numLines)
{
image = Mat(img_size, CV_8UC1, Scalar::all(rng.uniform(0, 128)));
for(unsigned int i = 0; i < numLines; ++i)
{
int y = rng.uniform(10, img_size.width - 10);
Point p1(y, 10);
Point p2(y, img_size.height - 10);
line(image, p1, p2, Scalar(255), 2);
}
}
void FLDBase::GenerateEdgeLines(Mat& image, const unsigned int numLines)
{
image = Mat(img_size, CV_8UC1, Scalar::all(0));
for(unsigned int i = 0; i < numLines; ++i)
{
int y = rng.uniform(10, img_size.width - 10);
Point p1(y, 10);
Point p2(y, img_size.height - 10);
line(image, p1, p2, Scalar(255), 1);
}
}
void FLDBase::GenerateBrokenLines(Mat& image, const unsigned int numLines)
{
image = Mat(img_size, CV_8UC1, Scalar::all(rng.uniform(0, 128)));
for(unsigned int i = 0; i < numLines; ++i)
{
int y = rng.uniform(10, img_size.width - 10);
Point p1(y, 10);
Point p2(y, img_size.height/2);
line(image, p1, p2, Scalar(255), 2);
p1 = Point2i(y, img_size.height/2 + 3);
p2 = Point2i(y, img_size.height - 10);
line(image, p1, p2, Scalar(255), 2);
}
}
void FLDBase::GenerateRotatedRect(Mat& image)
{
image = Mat::zeros(img_size, CV_8UC1);
Point center(rng.uniform(img_size.width/4, img_size.width*3/4),
rng.uniform(img_size.height/4, img_size.height*3/4));
Size rect_size(rng.uniform(img_size.width/8, img_size.width/6),
rng.uniform(img_size.height/8, img_size.height/6));
float angle = rng.uniform(0.f, 360.f);
Point2f vertices[4];
RotatedRect rRect = RotatedRect(center, rect_size, angle);
rRect.points(vertices);
for (int i = 0; i < 4; i++)
{
line(image, vertices[i], vertices[(i + 1) % 4], Scalar(255), 3);
}
}
void FLDBase::SetUp()
{
lines.clear();
test_image = Mat();
rng = RNG(FLD_TEST_SEED);
passedtests = 0;
}
TEST_F(ximgproc_FLD, whiteNoise)
{
for (int i = 0; i < EPOCHS; ++i)
{
GenerateWhiteNoise(test_image);
Ptr<FastLineDetector> detector = createFastLineDetector(20);
detector->detect(test_image, lines);
if(40u >= lines.size()) ++passedtests;
}
ASSERT_EQ(EPOCHS, passedtests);
}
TEST_F(ximgproc_FLD, constColor)
{
for (int i = 0; i < EPOCHS; ++i)
{
GenerateConstColor(test_image);
Ptr<FastLineDetector> detector = createFastLineDetector();
detector->detect(test_image, lines);
if(0u == lines.size()) ++passedtests;
}
ASSERT_EQ(EPOCHS, passedtests);
}
TEST_F(ximgproc_FLD, lines)
{
for (int i = 0; i < EPOCHS; ++i)
{
const unsigned int numOfLines = 1;
GenerateLines(test_image, numOfLines);
Ptr<FastLineDetector> detector = createFastLineDetector();
detector->detect(test_image, lines);
if(numOfLines * 2 == lines.size()) ++passedtests; // * 2 because of Gibbs effect
}
ASSERT_EQ(EPOCHS, passedtests);
}
TEST_F(ximgproc_FLD, edgeLines)
{
for (int i = 0; i < EPOCHS; ++i)
{
const unsigned int numOfLines = 1;
GenerateEdgeLines(test_image, numOfLines);
Ptr<FastLineDetector> detector = createFastLineDetector(10, 1.414213562f, 50, 50, 0);
detector->detect(test_image, lines);
if(numOfLines == lines.size()) ++passedtests;
}
ASSERT_EQ(EPOCHS, passedtests);
}
TEST_F(ximgproc_FLD, mergeLines)
{
for (int i = 0; i < EPOCHS; ++i)
{
const unsigned int numOfLines = 1;
GenerateBrokenLines(test_image, numOfLines);
Ptr<FastLineDetector> detector = createFastLineDetector(10, 1.414213562f, true);
detector->detect(test_image, lines);
if(numOfLines * 2 == lines.size()) ++passedtests; // * 2 because of Gibbs effect
}
ASSERT_EQ(EPOCHS, passedtests);
}
TEST_F(ximgproc_FLD, rotatedRect)
{
for (int i = 0; i < EPOCHS; ++i)
{
GenerateRotatedRect(test_image);
Ptr<FastLineDetector> detector = createFastLineDetector();
detector->detect(test_image, lines);
if(2u <= lines.size()) ++passedtests;
}
ASSERT_EQ(EPOCHS, passedtests);
}
}} // namespace
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