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.objectdetection.haar;
031
032/**
033 * A Rectangle with an associated weight. This is used to represent part of a
034 * haar-like feature.
035 * 
036 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
037 */
038public class WeightedRectangle {
039        /**
040         * The weight assigned to the rectangle
041         */
042        public float weight;
043
044        /**
045         * The height
046         */
047        public int height;
048
049        /**
050         * The width
051         */
052        public int width;
053
054        /**
055         * The top-left y-ordinate
056         */
057        public int y;
058
059        /**
060         * The top-left x-ordinate
061         */
062        public int x;
063
064        /**
065         * Construct a {@link WeightedRectangle} with the given parameters.
066         * 
067         * @param x
068         *            x-coordinate of top-left
069         * @param y
070         *            y-coordinate of top-left
071         * @param width
072         *            width
073         * @param height
074         *            height
075         * @param weight
076         *            weight
077         */
078        public WeightedRectangle(int x, int y, int width, int height, float weight) {
079                this.x = x;
080                this.y = y;
081                this.width = width;
082                this.height = height;
083                this.weight = weight;
084        }
085
086        /**
087         * parse a string of the form "x y width height weight" to construct a
088         * WeightedRectangle.
089         * 
090         * @param str
091         *            the string to parse
092         * @return the constructed WeightedRectangle
093         */
094        public static WeightedRectangle parse(String str) {
095                final String[] parts = str.trim().split(" ");
096
097                final int x = Integer.parseInt(parts[0]);
098                final int y = Integer.parseInt(parts[1]);
099                final int width = Integer.parseInt(parts[2]);
100                final int height = Integer.parseInt(parts[3]);
101                final float weight = Float.parseFloat(parts[4]);
102
103                return new WeightedRectangle(x, y, width, height, weight);
104        }
105}