Here you can find the source of shrink(BufferedImage source, double factor)
public static BufferedImage shrink(BufferedImage source, double factor)
//package com.java2s; /**// w w w. ja v a2 s . c o m com.inga.utils.SigarUtils.java Version: 1.0 ******************************************************************************** Author: Manuel Cuesta, programmer <camilocuesta@hotmail.com> ************************************************** cuestadao is Copyright (c) 2010, Manuel Cuesta <camilocuesta@hotmail.com > All rights reserved. Published under the terms of the new BSD license. See: [http://github.com/m-cuesta/tiers] for the full license and other info. LICENSE: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of Manuel Cuesta nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ************************************************** Revision History / Change Log: ************************************************** Notes: *******************************************************************************/ import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; public class Main { public static BufferedImage shrink(BufferedImage source, double factor) { int w = (int) (source.getWidth() * factor); int h = (int) (source.getHeight() * factor); Image image = source.getScaledInstance(w, h, Image.SCALE_AREA_AVERAGING); BufferedImage result = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB); Graphics2D g = result.createGraphics(); g.drawImage(image, 0, 0, null); g.dispose(); return result; } }