Trabajo en Clase

import ij.IJ;
import ij.
ImagePlus;
import ij.WindowManager;
import ij.gui.GenericDialog;
import ij.plugin.filter.PlugInFilter;
import ij.process.*;
public class Alpha_Blending implements PlugInFilter{
static double alpha = 0.5; //
ImagePlus fgIm = null; //
public int setup (String arg, ImagePlus imp)
{
return DOES_8G;
}
public void run(ImageProcessor bgIp)
{
if(runDialog())
{
ImageProcesor fgIp= fgIm.getProcessor().convertToByte(false);
fgIm = fgIp.duplicate();
fgIm.multiply(1-alpha);
bgIp.multiply(alpha);
bgIp.copyBits(fgIp, 0, 0, Blitter.ADD);
}
}
boolean runDialog()
{
//get list of open imagesint[]windowList = WindowManager.getIDList();
if(windowList == null){IJ.noImage();return false;
}
String[] windowTitles = new String[windowList.length];
for (int i=0; i < windowList.lenght(); i++)
ImagePlus im = WindowManager.getImage(windowList[i]);
if(im == null)windowTitles[i]="untitled";
elsewindowTitles[i]=im.getShortTitle();
}
GenericDialog gd = new GenericDialog("Alpha Blending");
gd.addChoice("Foreground image:"windowTitles, windowTitles[0]);
gd.addNumericField("Alpha value[0..1]:",alpha,2);
gd.showDialog();
if (gd.wasCanceled())return false;
else {int fgIdx = gd.getNextChoiceIndex();
fgIm = WindowManager.getImage(windowList[fgIdx]);
alpha = gd.getNextNumber();return true;
}
}
}