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.processing.face.alignment;
031
032import org.openimaj.image.FImage;
033import org.openimaj.image.processing.face.detection.DetectedFace;
034import org.openimaj.io.ReadWriteableBinary;
035
036/**
037 * A FaceAligner produces aligned face patches (i.e. with the eyes aligned or
038 * more). These can be used for building features for recognition, etc.
039 * 
040 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
041 * @param <T>
042 *            the type of {@link DetectedFace}
043 * 
044 */
045public interface FaceAligner<T extends DetectedFace> extends ReadWriteableBinary {
046        /**
047         * For the provided face detection, return an aligned version of the face.
048         * 
049         * @param face
050         *            the face to align
051         * @return aligned face
052         */
053        public FImage align(T face);
054
055        /**
056         * Return a mask image for aligned faces. 0 pixels mark background pixels
057         * that should be ignored in further processing of aligned faces produced by
058         * this aligner.
059         * 
060         * @return a mask image, or null if masking isn't required
061         */
062        public FImage getMask();
063}