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test.cpp
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#include "fftm.hpp"
#include "gtest/gtest.h"
using namespace std;
using namespace cv;
//----------------------------------------------
// Check if rotated box contained in rectangular region
//----------------------------------------------
bool boxInRange(cv::Rect r, cv::RotatedRect& rr)
{
Point2f rect_points[4];
rr.points(rect_points);
bool result = true;
for (int i = 0; i < 4; ++i)
{
if (!r.contains(rect_points[i]))
{
result = false;
break;
}
}
return result;
}
//-----------------------------------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------------------------------
void generateRotRectROI(Mat& img, RotatedRect& rect)
{
if (img.empty())
{
cout << "Empty image in generateRotRectROI. " << endl;
rect = RotatedRect();
return;
}
int w = img.cols;
int h = img.rows;
Rect roi(0, 0, w, h);
RNG rng(cv::getTickCount());
while (1)
{
int x = rng.uniform(w/2-w/5, w/2+w/5);
int y = rng.uniform(h/2-h/5, h/2+h/5);
float scale= rng.uniform(0.75f, 1.2f);
int wr = float(w)*scale;
int hr = float(h)*scale;
float ang= rng.uniform(-45.0, 45.0);
rect = cv::RotatedRect(Point2f(x, y), Size(wr, hr), ang);
if (boxInRange(roi, rect))
{
std::cout << "dx=" << x- (w / 2) << " dy=" << (y-h/2) << " scale=" << scale << " angle=" << ang << std::endl;
break;
}
}
}
//----------------------------------------------------------
//
//----------------------------------------------------------
void getQuadrangleSubPix_8u32f_CnR(const uchar* src, size_t src_step, Size src_size,
float* dst, size_t dst_step, Size win_size,
const double *matrix, int cn)
{
int x, y, k;
double A11 = matrix[0], A12 = matrix[1], A13 = matrix[2];
double A21 = matrix[3], A22 = matrix[4], A23 = matrix[5];
src_step /= sizeof(src[0]);
dst_step /= sizeof(dst[0]);
for (y = 0; y < win_size.height; y++, dst += dst_step)
{
double xs = A12*y + A13;
double ys = A22*y + A23;
double xe = A11*(win_size.width - 1) + A12*y + A13;
double ye = A21*(win_size.width - 1) + A22*y + A23;
if ((unsigned)(cvFloor(xs) - 1) < (unsigned)(src_size.width - 3) &&
(unsigned)(cvFloor(ys) - 1) < (unsigned)(src_size.height - 3) &&
(unsigned)(cvFloor(xe) - 1) < (unsigned)(src_size.width - 3) &&
(unsigned)(cvFloor(ye) - 1) < (unsigned)(src_size.height - 3))
{
for (x = 0; x < win_size.width; x++)
{
int ixs = cvFloor(xs);
int iys = cvFloor(ys);
const uchar *ptr = src + src_step*iys;
float a = (float)(xs - ixs), b = (float)(ys - iys), a1 = 1.f - a, b1 = 1.f - b;
float w00 = a1*b1, w01 = a*b1, w10 = a1*b, w11 = a*b;
xs += A11;
ys += A21;
if (cn == 1)
{
ptr += ixs;
dst[x] = ptr[0] * w00 + ptr[1] * w01 + ptr[src_step] * w10 + ptr[src_step + 1] * w11;
}
else if (cn == 3)
{
ptr += ixs * 3;
float t0 = ptr[0] * w00 + ptr[3] * w01 + ptr[src_step] * w10 + ptr[src_step + 3] * w11;
float t1 = ptr[1] * w00 + ptr[4] * w01 + ptr[src_step + 1] * w10 + ptr[src_step + 4] * w11;
float t2 = ptr[2] * w00 + ptr[5] * w01 + ptr[src_step + 2] * w10 + ptr[src_step + 5] * w11;
dst[x * 3] = t0;
dst[x * 3 + 1] = t1;
dst[x * 3 + 2] = t2;
}
else
{
ptr += ixs*cn;
for (k = 0; k < cn; k++)
dst[x*cn + k] = ptr[k] * w00 + ptr[k + cn] * w01 +
ptr[src_step + k] * w10 + ptr[src_step + k + cn] * w11;
}
}
}
else
{
for (x = 0; x < win_size.width; x++)
{
int ixs = cvFloor(xs), iys = cvFloor(ys);
float a = (float)(xs - ixs), b = (float)(ys - iys), a1 = 1.f - a, b1 = 1.f - b;
float w00 = a1*b1, w01 = a*b1, w10 = a1*b, w11 = a*b;
const uchar *ptr0, *ptr1;
xs += A11; ys += A21;
if ((unsigned)iys < (unsigned)(src_size.height - 1))
ptr0 = src + src_step*iys, ptr1 = ptr0 + src_step;
else
ptr0 = ptr1 = src + (iys < 0 ? 0 : src_size.height - 1)*src_step;
if ((unsigned)ixs < (unsigned)(src_size.width - 1))
{
ptr0 += ixs*cn; ptr1 += ixs*cn;
for (k = 0; k < cn; k++)
dst[x*cn + k] = ptr0[k] * w00 + ptr0[k + cn] * w01 + ptr1[k] * w10 + ptr1[k + cn] * w11;
}
else
{
ixs = ixs < 0 ? 0 : src_size.width - 1;
ptr0 += ixs*cn; ptr1 += ixs*cn;
for (k = 0; k < cn; k++)
dst[x*cn + k] = ptr0[k] * b1 + ptr1[k] * b;
}
}
}
}
}
//----------------------------------------------------------
//
//----------------------------------------------------------
void myGetQuadrangleSubPix(const Mat& src, Mat& dst, Mat& m)
{
CV_Assert(src.channels() == dst.channels());
cv::Size win_size = dst.size();
double matrix[6];
cv::Mat M(2, 3, CV_64F, matrix);
m.convertTo(M, CV_64F);
double dx = (win_size.width - 1)*0.5;
double dy = (win_size.height - 1)*0.5;
matrix[2] -= matrix[0] * dx + matrix[1] * dy;
matrix[5] -= matrix[3] * dx + matrix[4] * dy;
if (src.depth() == CV_8U && dst.depth() == CV_32F)
getQuadrangleSubPix_8u32f_CnR(src.data, src.step, src.size(),
(float*)dst.data, dst.step, dst.size(),
matrix, src.channels());
else
{
CV_Assert(src.depth() == dst.depth());
cv::warpAffine(src, dst, M, dst.size(),
cv::INTER_LINEAR + cv::WARP_INVERSE_MAP,
cv::BORDER_REPLICATE);
}
}
//----------------------------------------------------------
//
//----------------------------------------------------------
void getRotRectImg(cv::RotatedRect rr, Mat &img, Mat& dst)
{
Mat m(2, 3, CV_64FC1);
float ang = rr.angle*CV_PI / 180.0;
m.at<double>(0, 0) = cos(ang);
m.at<double>(1, 0) = sin(ang);
m.at<double>(0, 1) = -sin(ang);
m.at<double>(1, 1) = cos(ang);
m.at<double>(0, 2) = rr.center.x;
m.at<double>(1, 2) = rr.center.y;
myGetQuadrangleSubPix(img, dst, m);
}
//-----------------------------------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------------------------------
float rrDist(RotatedRect r1, RotatedRect r2)
{
return norm(r1.center - r2.center) + fabs(r1.size.width-r2.size.width) + fabs(r1.size.height - r2.size.height) + fabs(r1.angle-r2.angle);
}
//-----------------------------------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------------------------------
TEST(imgProc_LogPolarFFTTemplateMatch, resultTest)
{
//cvtest::TS::ptr()->get_data_path() + "denoising/lena_orig.png";
Mat test_img1 = imread("lena_orig.png", 0);
EXPECT_EQ(false, test_img1.empty());
if (test_img1.empty())
{
cout << "Error loading imput image. " << endl;
return;
}
Mat test_img2;
RotatedRect rect;
generateRotRectROI(test_img1, rect);
EXPECT_NE(0, rect.size.area());
test_img2 = Mat(rect.size, test_img1.type());
getRotRectImg(rect, test_img1, test_img2);
resize(test_img2, test_img2, test_img1.size());
RotatedRect rr = LogPolarFFTTemplateMatch(test_img1, test_img2, 200,100);
EXPECT_NE(0, rr.size.area());
Point2f rect_points[4];
rr.points(rect_points);
for (int j = 0; j < 4; j++)
{
line(test_img1, rect_points[j], rect_points[(j + 1) % 4], Scalar(1, 0, 0), 2, cv::LINE_AA);
}
float dist = rrDist(rr, rect);
EXPECT_LE(dist, 8);
}
//----------------------------------------------------------
//
//----------------------------------------------------------
int main(int argc, char* argv[])
{
testing::InitGoogleTest(&argc,argv);
return RUN_ALL_TESTS();
}