001/*******************************************************************************
002 * This software is provided as a supplement to the authors' textbooks on digital
003 * image processing published by Springer-Verlag in various languages and editions.
004 * Permission to use and distribute this software is granted under the BSD 2-Clause
005 * "Simplified" License (see http://opensource.org/licenses/BSD-2-Clause).
006 * Copyright (c) 2006-2023 Wilhelm Burger, Mark J. Burge. All rights reserved.
007 * Visit https://imagingbook.com for additional details.
008 ******************************************************************************/
009
010package imagingbook.common.sift.scalespace;
011
012/**
013 * <p>
014 * Represents a hierarchical DoG scale space. See Sec. 25.1.4 of [1] for more details.
015 * </p>
016 * <p>
017 * [1] W. Burger, M.J. Burge, <em>Digital Image Processing &ndash; An Algorithmic Introduction</em>, 3rd ed, Springer
018 * (2022).
019 * </p>
020 *
021 * @author WB
022 * @version 2022/11/20
023 */
024public class DogScaleSpace extends HierarchicalScaleSpace<DogOctave> {
025
026        /**
027         * Constructor, creates a {@link DogScaleSpace} from an existing {@link GaussianScaleSpace}.
028         *
029         * @param G a {@link GaussianScaleSpace}
030         */
031        public DogScaleSpace(GaussianScaleSpace G) {
032                super(G.P, G.Q, G.sigma_s, G.sigma_0, G.botLevel, G.topLevel-1);  //botLevel = -1, topLevel = K+1
033                build(G);
034        }       
035        
036        private void build(GaussianScaleSpace G) {
037                // build DoG octaves:
038                for (int p = 0; p < G.P; p++) {
039                        GaussianOctave Gp = G.getOctave(p);
040                        setOctave(p, new DogOctave(Gp));
041                }
042        }
043
044}