001/*******************************************************************************
002 * This software is provided as a supplement to the authors' textbooks on digital
003 * image processing published by Springer-Verlag in various languages and editions.
004 * Permission to use and distribute this software is granted under the BSD 2-Clause
005 * "Simplified" License (see http://opensource.org/licenses/BSD-2-Clause).
006 * Copyright (c) 2006-2023 Wilhelm Burger, Mark J. Burge. All rights reserved.
007 * Visit https://imagingbook.com for additional details.
008 ******************************************************************************/
009package ImageJ_Demos;
010
011import ij.IJ;
012import ij.ImagePlus;
013import ij.plugin.PlugIn;
014import ij.process.ByteProcessor;
015import ij.process.ImageConverter;
016import imagingbook.core.jdoc.JavaDocHelp;
017
018/**
019 * This ImageJ plugin shows how to change the type of the current image 'in place', i.e., without copying the image.
020 *
021 * @author WB
022 * @version 2020/12/17
023 */
024public class Convert_ImagePlus_To_Gray implements PlugIn, JavaDocHelp {
025
026        @Override
027        public void run(String arg) {
028                ImagePlus im = IJ.getImage();   // im can be of any type
029                
030                ImageConverter iConv = new ImageConverter(im);
031                iConv.convertToGray8();
032                
033                ByteProcessor ip = (ByteProcessor) im.getProcessor();   // bp is of type ByteProcessor
034                ip.sharpen(); // process the grayscale image ...
035        }
036}