Here you can find the source of compareImage(BufferedImage biA, BufferedImage biB)
public static boolean compareImage(BufferedImage biA, BufferedImage biB)
//package com.java2s; /* /*from w w w.j av a 2 s. c o m*/ * The MIT License * * Copyright 2014 Simon Wimmesberger. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ import java.awt.image.BufferedImage; import java.awt.image.DataBuffer; public class Main { public static boolean compareImage(BufferedImage biA, BufferedImage biB) { // take buffer data from botm image files // DataBuffer dbA = biA.getData().getDataBuffer(); int sizeA = dbA.getSize(); DataBuffer dbB = biB.getData().getDataBuffer(); int sizeB = dbB.getSize(); // compare data-buffer objects // if (sizeA == sizeB) { for (int i = 0; i < sizeA; i++) { if (dbA.getElem(i) != dbB.getElem(i)) { return false; } } return true; } else { return false; } } }