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.tools.globalfeature.type; 031 032import org.kohsuke.args4j.Option; 033import org.openimaj.feature.FeatureVector; 034import org.openimaj.image.FImage; 035import org.openimaj.image.MBFImage; 036import org.openimaj.image.feature.global.LuoSimplicity; 037import org.openimaj.tools.globalfeature.GlobalFeatureExtractor; 038 039/** 040 * Luo's simplicity feature 041 * @see LuoSimplicity 042 */ 043public class LuoSimplicityExtractor extends GlobalFeatureExtractor { 044 @Option(name="--bins-per-band", aliases="-bpb", required=false, usage="Number of bins to split the R, G and B bands into when constructing the histogram (default 16)") 045 int binsPerBand = 16; 046 047 @Option(name="--gamma", required=false, usage="percentage threshold on the max value of the histogram for counting high-valued bins (default 0.01)") 048 float gamma = 0.01f; 049 050 @Option(name="--alpha", required=false, usage="alpha parameter for determining bounding box size based on the energy ratio (default 0.9)") 051 float alpha = 0.9f; 052 053 @Option(name="--max-kernel-size", required=false, usage="maximum smoothing kernel size (default 50)") 054 int maxKernelSize; 055 056 @Option(name="--kernel-size-step", required=false, usage="step size to increment smoothing kernel by (default 1)") 057 int kernelSizeStep = 1; 058 059 @Option(name="--num-bins", required=false, usage="number of bins for the gradiant histograms (default 41)") 060 int nbins = 41; 061 062 @Option(name="--window-size", required=false, usage="window size for estimating depth of field (default 3)") 063 int windowSize = 3; 064 065 @Override 066 public FeatureVector extract(MBFImage image, FImage mask) { 067 LuoSimplicity cc = new LuoSimplicity(binsPerBand, gamma, alpha, maxKernelSize, kernelSizeStep, nbins, windowSize); 068 image.analyseWith(cc); 069 return cc.getFeatureVector(); 070 } 071}