001/** 002 * Copyright (c) 2011, The University of Southampton and the individual contributors. 003 * All rights reserved. 004 * 005 * Redistribution and use in source and binary forms, with or without modification, 006 * are permitted provided that the following conditions are met: 007 * 008 * * Redistributions of source code must retain the above copyright notice, 009 * this list of conditions and the following disclaimer. 010 * 011 * * Redistributions in binary form must reproduce the above copyright notice, 012 * this list of conditions and the following disclaimer in the documentation 013 * and/or other materials provided with the distribution. 014 * 015 * * Neither the name of the University of Southampton nor the names of its 016 * contributors may be used to endorse or promote products derived from this 017 * software without specific prior written permission. 018 * 019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 029 */ 030package org.openimaj.image.processing.convolution.filterbank; 031 032import org.openimaj.image.FImage; 033 034/** 035 * Implementation of the MR8 filter bank described at: 036 * http://www.robots.ox.ac.uk/~vgg/research/texclass/filters.html 037 * 038 * This is the naive implementation and as such is quite slow. 039 * 040 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk) 041 */ 042public class MR8FilterBank extends RootFilterSetFilterBank { 043 044 /* 045 * (non-Javadoc) 046 * 047 * @see 048 * org.openimaj.image.processor.ImageProcessor#processImage(org.openimaj 049 * .image.Image) 050 */ 051 @Override 052 public void analyseImage(FImage image) { 053 super.analyseImage(image); 054 055 final FImage[] allresponses = responses; 056 responses = new FImage[8]; 057 058 int allIndex = 0; 059 int idx = 0; 060 for (int type = 0; type < 2; type++) { 061 for (int scale = 0; scale < SCALES.length; scale++) { 062 responses[idx] = allresponses[allIndex]; 063 allIndex++; 064 065 for (int orient = 1; orient < NUM_ORIENTATIONS; orient++) { 066 for (int y = 0; y < image.height; y++) { 067 for (int x = 0; x < image.width; x++) { 068 responses[idx].pixels[y][x] = Math.max(responses[idx].pixels[y][x], 069 allresponses[allIndex].pixels[y][x]); 070 } 071 } 072 073 allIndex++; 074 } 075 076 idx++; 077 } 078 } 079 080 responses[idx++] = allresponses[allIndex++]; 081 responses[idx++] = allresponses[allIndex++]; 082 } 083}