1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
#include <opencv2/core.hpp>
#include <opencv2/core/utility.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
#include <opencv2/ximgproc.hpp>
#include <iostream>
using namespace cv;
using namespace std;
struct ThParameters {
int levelNoise;
int angle;
int scale10;
int origin;
int xg;
int yg;
bool update;
} ;
static vector<Point> NoisyPolygon(vector<Point> pRef, double n);
static void UpdateShape(int , void *r);
static void AddSlider(String sliderName, String windowName, int minSlider, int maxSlider, int valDefault, int *valSlider, void(*f)(int, void *), void *r);
int main(void)
{
vector<Point> ctrRef;
vector<Point> ctrRotate, ctrNoisy, ctrNoisyRotate, ctrNoisyRotateShift;
// build a shape with 5 vertex
ctrRef.push_back(Point(250,250)); ctrRef.push_back(Point(400, 250));
ctrRef.push_back(Point(400, 300)); ctrRef.push_back(Point(250, 300));ctrRef.push_back(Point(180, 270));
Point cg(0,0);
for (int i=0;i<static_cast<int>(ctrRef.size());i++)
cg+=ctrRef[i];
cg.x /= static_cast<int>(ctrRef.size());
cg.y /= static_cast<int>(ctrRef.size());
ThParameters p;
p.levelNoise=6;
p.angle=45;
p.scale10=5;
p.origin=10;
p.xg=150;
p.yg=150;
p.update=true;
namedWindow("FD Curve matching");
// A rotation with center at (150,150) of angle 45 degrees and a scaling of 5/10
AddSlider("Noise", "FD Curve matching", 0, 20, p.levelNoise, &p.levelNoise, UpdateShape, &p);
AddSlider("Angle", "FD Curve matching", 0, 359, p.angle, &p.angle, UpdateShape, &p);
AddSlider("Scale", "FD Curve matching", 5, 100, p.scale10, &p.scale10, UpdateShape, &p);
AddSlider("Origin%%", "FD Curve matching", 0, 100, p.origin, &p.origin, UpdateShape, &p);
AddSlider("Xg", "FD Curve matching", 150, 450, p.xg, &p.xg, UpdateShape, &p);
AddSlider("Yg", "FD Curve matching", 150, 450, p.yg, &p.yg, UpdateShape, &p);
int code=0;
double dist;
vector<vector<Point> > c;
Mat img;
cout << "******************** PRESS g TO MATCH CURVES *************\n";
do
{
code = waitKey(30);
if (p.update)
{
Mat r = getRotationMatrix2D(Point(p.xg, p.yg), p.angle, 10.0/ p.scale10);
ctrNoisy= NoisyPolygon(ctrRef,static_cast<double>(p.levelNoise));
cv::transform(ctrNoisy, ctrNoisyRotate, r);
ctrNoisyRotateShift.clear();
for (int i=0;i<static_cast<int>(ctrNoisy.size());i++)
ctrNoisyRotateShift.push_back(ctrNoisyRotate[(i+(p.origin*ctrNoisy.size())/100)% ctrNoisy.size()]);
// To draw contour using drawcontours
c.clear();
c.push_back(ctrRef);
c.push_back(ctrNoisyRotateShift);
p.update = false;
Rect rglobal;
for (int i = 0; i < static_cast<int>(c.size()); i++)
{
rglobal = boundingRect(c[i]) | rglobal;
}
rglobal.width += 10;
rglobal.height += 10;
img = Mat::zeros(2 * rglobal.height, 2 * rglobal.width, CV_8UC(3));
drawContours(img, c, 0, Scalar(255,0,0));
drawContours(img, c, 1, Scalar(0, 255, 0));
circle(img, c[0][0], 5, Scalar(255, 0, 0));
circle(img, c[1][0], 5, Scalar(0, 255, 0));
imshow("FD Curve matching", img);
}
if (code == 'd')
{
destroyWindow("FD Curve matching");
namedWindow("FD Curve matching");
// A rotation with center at (150,150) of angle 45 degrees and a scaling of 5/10
AddSlider("Noise", "FD Curve matching", 0, 20, p.levelNoise, &p.levelNoise, UpdateShape, &p);
AddSlider("Angle", "FD Curve matching", 0, 359, p.angle, &p.angle, UpdateShape, &p);
AddSlider("Scale", "FD Curve matching", 5, 100, p.scale10, &p.scale10, UpdateShape, &p);
AddSlider("Origin%%", "FD Curve matching", 0, 100, p.origin, &p.origin, UpdateShape, &p);
AddSlider("Xg", "FD Curve matching", 150, 450, p.xg, &p.xg, UpdateShape, &p);
AddSlider("Yg", "FD Curve matching", 150, 450, p.yg, &p.yg, UpdateShape, &p);
}
if (code == 'g')
{
ximgproc::ContourFitting fit;
vector<Point2f> ctrRef2d, ctrRot2d;
// sampling contour we want 256 points
ximgproc::contourSampling(ctrRef, ctrRef2d, 256); // use a mat
ximgproc::contourSampling(ctrNoisyRotateShift, ctrRot2d, 256); // use a vector of points
fit.setFDSize(16);
Mat t;
fit.estimateTransformation(ctrRot2d, ctrRef2d, t, &dist, false);
cout << "Transform *********\n "<<"Origin = "<< 1-t.at<double>(0,0) <<" expected "<< p.origin/100.0 <<" ("<< ctrNoisy.size()<<")\n";
cout << "Angle = " << t.at<double>(0, 1) * 180 / M_PI << " expected " << p.angle <<"\n";
cout << "Scale = " << t.at<double>(0, 2) << " expected " << p.scale10 / 10.0 << "\n";
Mat dst;
ximgproc::transformFD(ctrRot2d, t, dst, false);
c.push_back(dst);
drawContours(img, c, 2, Scalar(0,255,255));
circle(img, c[2][0], 5, Scalar(0, 255, 255));
imshow("FD Curve matching", img);
}
}
while (code!=27);
return 0;
}
vector<Point> NoisyPolygon(vector<Point> pRef, double n)
{
RNG rng;
vector<Point> c;
vector<Point> p = pRef;
vector<vector<Point> > contour;
for (int i = 0; i<static_cast<int>(p.size()); i++)
p[i] += Point(Point2d(n*rng.uniform((double)-1, (double)1), n*rng.uniform((double)-1, (double)1)));
if (n==0)
return p;
c.push_back(p[0]);
int minX = p[0].x, maxX = p[0].x, minY = p[0].y, maxY = p[0].y;
for (int i = 0; i <static_cast<int>(p.size()); i++)
{
int next = i + 1;
if (next == static_cast<int>(p.size()))
next = 0;
Point2d u = p[next] - p[i];
int d = static_cast<int>(norm(u));
double a = atan2(u.y, u.x);
int step = 1;
if (n != 0)
step = static_cast<int>(d / n);
for (int j = 1; j<d; j += max(step, 1))
{
Point pNew;
do
{
Point2d pAct = (u*j) / static_cast<double>(d);
double r = n*rng.uniform((double)0, (double)1);
double theta = a + rng.uniform(0., 2 * CV_PI);
pNew = Point(Point2d(r*cos(theta) + pAct.x + p[i].x, r*sin(theta) + pAct.y + p[i].y));
} while (pNew.x<0 || pNew.y<0);
if (pNew.x<minX)
minX = pNew.x;
if (pNew.x>maxX)
maxX = pNew.x;
if (pNew.y<minY)
minY = pNew.y;
if (pNew.y>maxY)
maxY = pNew.y;
c.push_back(pNew);
}
}
return c;
}
void UpdateShape(int , void *r)
{
((ThParameters *)r)->update = true;
}
void AddSlider(String sliderName, String windowName, int minSlider, int maxSlider, int valDefault, int *valSlider, void(*f)(int, void *), void *r)
{
createTrackbar(sliderName, windowName, valSlider, 1, f, r);
setTrackbarMin(sliderName, windowName, minSlider);
setTrackbarMax(sliderName, windowName, maxSlider);
setTrackbarPos(sliderName, windowName, valDefault);
}
|
