// define head function
#ifndef PS_ALGORITHM_H_INCLUDED
#define PS_ALGORITHM_H_INCLUDED
#include
#include
#include "cv.h"
#include "highgui.h"
#include "cxmat.hpp"
#include "cxcore.hpp"
#include "math.h"
using namespace std;
using namespace cv;
void Show_Image(Mat&, const string &);
#endif // PS_ALGORITHM_H_INCLUDED
/*
generate the pinch distortion
*/
#include "PS_Algorithm.h"
#include
using namespace std;
using namespace cv;
#define pi 3.1415926
int main()
{
string Img_name("4.jpg");
Mat Img;
Img=imread(Img_name);
Mat Img_out(Img.size(), CV_8UC3);
Img.copyTo(Img_out);
int width=Img.cols;
int height=Img.rows;
float angle = pi/2;
float centreX = 0.5;
float centreY = 0.5;
float radius = 200;
float amount=0.5;
if (radius==0) radius=std::min(width, height)/2;
float icentreX=width*centreX;
float icentreY=height*centreY;
float radius2=radius*radius;
float dx,dy,new_x,new_y;
float p,q,x1,y1;
float distance;
float a,d,t,s,c,e;
for (int y=0; yradius2 || distance==0)
{
new_x=x;
new_y=y;
}
else
{
d = sqrt( distance / radius2 );
t = pow(sin( pi*0.5 * d ),-amount);
dx =dx* t;
dy =dy* t;
e = 1 - d;
a = angle * e * e;
s = sin( a );
c = cos( a );
new_x = icentreX + c*dx - s*dy;
new_y = icentreY + s*dx + c*dy;
}
if(new_x<0) new_x=0;
if(new_x>=width-1) new_x=width-2;
if(new_y<0) new_y=0;
if(new_y>=height-1) new_y=height-2;
x1=(int)new_x;
y1=(int)new_y;
p=new_x-x1;
q=new_y-y1;
for (int k=0; k<3; k++)
{
Img_out.at(y, x)[k]=(1-p)*(1-q)*Img.at(y1, x1)[k]+
(p)*(1-q)*Img.at(y1,x1+1)[k]+
(1-p)*(q)*Img.at(y1+1,x1)[k]+
(p)*(q)*Img.at(y1+1,x1+1)[k];
}
}
}
Show_Image(Img_out, "out");
cout<<"All is well"<
#include
using namespace std;
using namespace cv;
void Show_Image(Mat& Image, const string& str)
{
namedWindow(str.c_str(),CV_WINDOW_AUTOSIZE);
imshow(str.c_str(), Image);
}