CONTRASTE

import ij.*;
import ij.process.*;
import ij.gui.*;
import java.awt.*;
import ij.plugin.filter.*;
public class Filter_Contraste implements PlugInFilter
{
ImagePlus imp;
public int setup(String arg, ImagePlus imp)
{
this.imp = imp;
return DOES_8G;
}
public void run(ImageProcessor ip)
{
int w=ip.getWidth();
int n=ip.getHeight();
for(int i =0; i < w;i++)
{
for(int j= 0;
j {int p =ip.getPixel(i,j);
p = (int)(p*2+50);
if (p > 255){p=255;
}
ip.putPixel(i,j,p);
}
}
}
}