Filtro Ecualización

import ij.*;
import ij.process.*;
import ij.gui.*;
import java.awt.*;
import ij.plugin.filter.*;

public class Filtro_Equalizacion implements PlugInFilter
{
ImagePlus imp;

public int setup(String arg, ImagePlus imp)
{
this.imp = imp;
return DOES_ALL;
}

public void run(ImageProcessor ip)
{
int [] H= ip.getHistogram();
int K1=255;
for (int k=1; k< H.length; k++)
{
H[k]=H[k-1]+H[k];
}

int w=ip.getWidth();
int n=ip.getHeight();
for(int i =0; i < w;i++)
{
for(int j= 0; j < n;j++)
{
//int p = (int)(ip.getPixel(i,j)*0.5+1.5);
int p =(int)(ip.getPixel(i, j));
p=H[p]*((K1-1)/(i*j));
ip.putPixel(i,j,p);
}
}
}

}