Here you can find the source of pixelsb(BufferedImage image)
public static byte[] pixelsb(BufferedImage image)
//package com.java2s; /*//from ww w . j a v a 2 s.co m This file is part of Cuber. Cuber 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. Cuber 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 Cuber. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.image.BufferedImage; import java.awt.image.DataBuffer; import java.awt.image.DataBufferByte; public class Main { public static byte[] pixelsb(BufferedImage image) { DataBuffer dataBuffer = image.getRaster().getDataBuffer(); if (dataBuffer instanceof DataBufferByte) { return ((DataBufferByte) dataBuffer).getData(); } throw new IllegalArgumentException("image is instanceof " + dataBuffer.getClass()); } }