gistfile1.java

import ij.IJ;
import ij.ImagePlus;
import ij.ImageStack;

import ij.plugin.filter.PlugInFilter;

import ij.process.ImageProcessor;

public class JoshD_Z_Deinterlacing implements PlugInFilter {
	protected ImagePlus image;

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

	public void run(ImageProcessor ip) {
		int width = image.getWidth(), height = image.getHeight();
		ImageStack stack = image.getStack();
		ImageStack out = new ImageStack(width, height / 2);
		for (int slice = 1; slice <= stack.getSize(); slice++) {
			ip = stack.getProcessor(slice);
			Object pixels = ip.getPixels();
			ImageProcessor ip1 = ip.createProcessor(width, height / 2);
			Object pixels1 = ip1.getPixels();
			ImageProcessor ip2 = ip.createProcessor(width, height / 2);
			Object pixels2 = ip2.getPixels();
			for (int y = 0; y < (height - 1) / 2; y++) {
				System.arraycopy(pixels, width * 2 * y, pixels1, width * y, width);
				System.arraycopy(pixels, width * (2 * y + 1), pixels2, width * y, width);
			}
			out.addSlice("", ip1);
			out.addSlice("", ip2);
			IJ.showProgress(slice, stack.getSize());
		}
		new ImagePlus("Deinterleaved " + image.getTitle(), out).show();
	}
}