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.feature.local.detector.ipd.collector; 031 032import org.openimaj.feature.OrientedFeatureVector; 033import org.openimaj.image.FImage; 034import org.openimaj.image.feature.local.detector.ipd.extractor.InterestPointGradientFeatureExtractor; 035import org.openimaj.image.feature.local.engine.ipd.InterestPointImageExtractorProperties; 036import org.openimaj.image.feature.local.interest.EllipticInterestPointData; 037 038/** 039 * Use the interest point's local shape to extract features from an affine 040 * corrected patch at the interest point. 041 * 042 * @author Sina Samangooei (ss@ecs.soton.ac.uk) 043 * 044 */ 045public class AffineInterestPointFeatureCollector extends InterestPointFeatureCollector<EllipticInterestPointData> { 046 047 /** 048 * @param extractor 049 */ 050 public AffineInterestPointFeatureCollector(InterestPointGradientFeatureExtractor extractor) { 051 super(extractor); 052 } 053 054 @Override 055 public void foundInterestPoint(FImage image, EllipticInterestPointData point) { 056 final InterestPointImageExtractorProperties<Float, FImage> property = new InterestPointImageExtractorProperties<Float, FImage>( 057 image, point); 058 final OrientedFeatureVector[] extracted = extractor.extractFeature(property); 059 060 for (final OrientedFeatureVector feature : extracted) { 061 features.add(new AffineInterestPointKeypoint(feature, point.clone())); 062 } 063 064 } 065 066 @Override 067 public void foundInterestPoint(FImage image, EllipticInterestPointData point, double octaveSize) { 068 final InterestPointImageExtractorProperties<Float, FImage> property = new InterestPointImageExtractorProperties<Float, FImage>( 069 image, point); 070 final OrientedFeatureVector[] extracted = extractor.extractFeature(property); 071 072 for (final OrientedFeatureVector feature : extracted) { 073 point = point.clone(); 074 point.scale *= octaveSize; 075 point.x *= octaveSize; 076 point.y *= octaveSize; 077 078 features.add(new AffineInterestPointKeypoint(feature, point.clone())); 079 } 080 } 081}