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.demos.features; 031 032import java.util.ArrayList; 033import java.util.List; 034 035import org.openimaj.demos.Demo; 036import org.openimaj.image.DisplayUtilities; 037import org.openimaj.image.MBFImage; 038import org.openimaj.image.analysis.watershed.Component; 039import org.openimaj.image.analysis.watershed.feature.MomentFeature; 040import org.openimaj.image.colour.ColourSpace; 041import org.openimaj.image.colour.RGBColour; 042import org.openimaj.image.colour.Transforms; 043import org.openimaj.image.feature.local.detector.mser.MSERFeatureGenerator; 044import org.openimaj.image.renderer.MBFImageRenderer; 045import org.openimaj.math.geometry.shape.Ellipse; 046 047/** 048 * Demo showing ellipse fitted to MSERs 049 * 050 * @author Sina Samangooei (ss@ecs.soton.ac.uk) 051 */ 052@Demo( 053 author = "Sina Samangooei", 054 description = "Shows ellipse fitting for regions detected using an MSER feature extractor", 055 keywords = { 056 "mser", "ellipse", "feat" }, 057 title = "MSER Ellipse Finder") 058public class MSEREllipseFinder { 059 /** 060 * Construct demo 061 */ 062 public MSEREllipseFinder() { 063 final MBFImage image = new MBFImage(400, 400, ColourSpace.RGB); 064 final MBFImageRenderer renderer = image.createRenderer(); 065 066 image.fill(RGBColour.WHITE); 067 final List<Ellipse> ellipses = new ArrayList<Ellipse>(); 068 ellipses.add(new Ellipse(200, 100, 100, 80, Math.PI / 4)); 069 ellipses.add(new Ellipse(200, 300, 50, 30, -Math.PI / 4)); 070 ellipses.add(new Ellipse(100, 300, 30, 50, -Math.PI / 3)); 071 072 for (final Ellipse ellipse : ellipses) { 073 renderer.drawShapeFilled(ellipse, RGBColour.BLACK); 074 } 075 076 final MSERFeatureGenerator mser = new MSERFeatureGenerator(MomentFeature.class); 077 final List<Component> features = mser.generateMSERs(Transforms 078 .calculateIntensityNTSC(image)); 079 for (final Component c : features) { 080 final MomentFeature feature = c.getFeature(MomentFeature.class); 081 renderer.drawShape(feature.getEllipse(2), RGBColour.RED); 082 renderer.drawShape(feature.getEllipse(2) 083 .calculateOrientedBoundingBox(), RGBColour.GREEN); 084 } 085 DisplayUtilities.display(image); 086 } 087 088 /** 089 * The main method 090 * 091 * @param args 092 * ignored 093 */ 094 public static void main(String args[]) { 095 new MSEREllipseFinder(); 096 } 097}