/**
    * Copyright (c) 2011, The University of Southampton and the individual contributors.
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *
    *   * 	Redistributions of source code must retain the above copyright notice,
    * 	this list of conditions and the following disclaimer.
   *
   *   *	Redistributions in binary form must reproduce the above copyright notice,
   * 	this list of conditions and the following disclaimer in the documentation
   * 	and/or other materials provided with the distribution.
   *
   *   *	Neither the name of the University of Southampton nor the names of its
   * 	contributors may be used to endorse or promote products derived from this
   * 	software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.openimaj.demos.facestuff;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.MalformedURLException;
  
  import org.openimaj.image.FImage;
  import org.openimaj.image.ImageUtilities;
  import org.openimaj.image.processing.face.alignment.AffineAligner;
  import org.openimaj.image.processing.face.alignment.FaceAligner;
  import org.openimaj.image.processing.face.detection.keypoints.FKEFaceDetector;
  import org.openimaj.image.processing.face.detection.keypoints.FacialKeypoint;
  import org.openimaj.image.processing.face.detection.keypoints.KEDetectedFace;
  import org.openimaj.math.geometry.point.Point2dImpl;
  import org.openimaj.math.geometry.transforms.TransformUtilities;
  
  public class Alignment {
  	public static void main(String[] args) throws MalformedURLException, IOException {
  		final FImage img = ImageUtilities.readF(new File(
  				"/Volumes/Raid/face_databases/lfw/Aaron_Peirsol/Aaron_Peirsol_0002.jpg"));
  		final FKEFaceDetector detector = new FKEFaceDetector(1.6f);
  		final FaceAligner<KEDetectedFace> aligner = new AffineAligner(125, 160, 0.1f);
  
  		final KEDetectedFace face = detector.detectFaces(img).get(0);
  
  		final int facePatchSize = Math.max(160, 125);
  		final double size = facePatchSize + 2.0 * facePatchSize * 0.1f;
  		final double sc = 80 / size;
  
  		final float[][] Pmu = {
  				{ 25.0347f, 34.1802f, 44.1943f, 53.4623f, 34.1208f, 39.3564f, 44.9156f, 31.1454f, 47.8747f },
  				{ 34.1580f, 34.1659f, 34.0936f, 33.8063f, 45.4179f, 47.0043f, 45.3628f, 53.0275f, 52.7999f } };
  
  		FImage model = new FImage(125, 160);
  		for (int i = 0; i < Pmu[0].length; i++) {
  			Point2dImpl pt = new Point2dImpl(Pmu[0][i], Pmu[1][i]);
  
  			pt = pt.transform(TransformUtilities.scaleMatrixAboutPoint(1 / sc, 1 / sc, new Point2dImpl(Pmu[0][0],
  					Pmu[1][0])));
  
  			model.drawPoint(pt, 1f, 3);
  		}
  
  		for (final FacialKeypoint kpt : face.getKeypoints())
  			img.drawPoint(
  					kpt.position.transform(TransformUtilities.translateMatrix(face.getBounds().x, face.getBounds().y)),
  					1f, 3);
  		model = model.inverse();
  		ImageUtilities.write(img, new File("/Users/jsh2/keypoints.png"));
  		ImageUtilities.write(model, new File("/Users/jsh2/model.png"));
  		ImageUtilities.write(aligner.align(face), new File("/Users/jsh2/aligned.png"));
  	}
  }