Here you can find the source of absoluteDifferenceImage(ImageIcon icon1, ImageIcon icon2, double scale)
| Parameter | Description |
|---|---|
| icon1 | the first image icon |
| icon2 | the second image icon |
| scale | how much to scale the result |
public static BufferedImage absoluteDifferenceImage(ImageIcon icon1, ImageIcon icon2, double scale)
//package com.java2s; /*//from w w w . j a va 2 s .co m * ArikTools * Copyright (C) Arik Z.Lakritz, Peter Macko, and David K. Wittenberg * * This file is part of ArikTools. * * ArikTools is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * ArikTools is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with ArikTools. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.image.*; import javax.swing.*; public class Main { /** * Generate the absolute difference image between two images * * @param rgb1 the first RGB array * @param rgb2 the second RGB array * @param scale how much to scale the result * @return new rgb array */ public static int[] absoluteDifferenceImage(int[] rgb1, int[] rgb2, double scale) { if (rgb1.length != rgb2.length) throw new RuntimeException("The two images need to have the same number of pixels"); int[] out = new int[rgb1.length]; for (int i = 0; i < rgb1.length; i++) { int c1 = rgb1[i]; int r1 = (c1 >> 16) & 0xff; int g1 = (c1 >> 8) & 0xff; int b1 = (c1) & 0xff; int c2 = rgb2[i]; int r2 = (c2 >> 16) & 0xff; int g2 = (c2 >> 8) & 0xff; int b2 = (c2) & 0xff; int r = Math.round(Math.max(Math.min(Math.round(Math.abs(r1 - r2) * scale), 255), 0)); int g = Math.round(Math.max(Math.min(Math.round(Math.abs(g1 - g2) * scale), 255), 0)); int b = Math.round(Math.max(Math.min(Math.round(Math.abs(b1 - b2) * scale), 255), 0)); out[i] = (r << 16) | (g << 8) | b; } return out; } /** * Generate the absolute difference image between two images * * @param icon1 the first image icon * @param icon2 the second image icon * @param scale how much to scale the result * @return the difference buffered image */ public static BufferedImage absoluteDifferenceImage(ImageIcon icon1, ImageIcon icon2, double scale) { return plotRGB(absoluteDifferenceImage(grabRGB(icon1), grabRGB(icon2), scale), icon1.getIconWidth(), icon1.getIconHeight()); } /** * Create a buffered image from an RGB array * * @param rgb the RGB array * @param width the image width * @param height the image height * @return the buffered image */ public static BufferedImage plotRGB(int rgb[], int width, int height) { BufferedImage b = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); for (int y = 0; y < height; y++) { int base = y * width; for (int x = 0; x < width; x++) { b.setRGB(x, y, rgb[base + x]); } } return b; } /** * Grabs a RGB values of the given image icon * * @param icon the image icon * @return an array of RGB values */ public static int[] grabRGB(ImageIcon icon) { int width = icon.getIconWidth(); int height = icon.getIconHeight(); int[] rgb = new int[width * height]; PixelGrabber pg = new PixelGrabber(icon.getImage(), 0, 0, width, height, rgb, 0, width); try { pg.grabPixels(); } catch (InterruptedException e) { throw new RuntimeException("Interrupted waiting for pixels!"); } if ((pg.getStatus() & ImageObserver.ABORT) != 0) { throw new RuntimeException("Image fetch aborted or errored"); } for (int i = 0; i < rgb.length; i++) rgb[i] &= 0xffffff; return rgb; } }