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.ImagePlus;
012import ij.plugin.filter.PlugInFilter;
013import ij.process.ByteProcessor;
014import ij.process.ImageProcessor;
015import imagingbook.core.jdoc.JavaDocHelp;
016
017/**
018 * This plugin demonstrates how to create and display a new byte image (to show the histogram of the input image).
019 *
020 * @author WB
021 */
022public class Create_New_Byte_Image implements PlugInFilter, JavaDocHelp {
023        
024        ImagePlus im;
025
026        public int setup(String arg, ImagePlus im) {
027                this.im = im;
028                return DOES_8G + NO_CHANGES;
029        }
030
031        public void run(ImageProcessor ip) {
032                // obtain the histogram of ip:
033                int[] hist = ip.getHistogram();
034                int K = hist.length;
035                
036                // create the histogram image:
037                ImageProcessor histIp = new ByteProcessor(K, 100);
038                histIp.setValue(255);   // white = 255
039                histIp.fill();
040
041                // draw the histogram values as black bars in histIp here, 
042                // for example, using histIp.putpixel(u, v, 0)
043                // ...
044                
045                // compose a nice title:
046                String imTitle = im.getShortTitle();
047                String histTitle = "Histogram of " + imTitle;
048                
049                // display the histogram image:
050                ImagePlus histIm = new ImagePlus(histTitle, histIp);
051                histIm.show(); 
052        }
053}