/**
 * 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.image.feature;

import org.openimaj.feature.FeatureExtractor;
import org.openimaj.feature.FeatureVector;
import org.openimaj.feature.FeatureVectorProvider;
import org.openimaj.image.Image;
import org.openimaj.image.analyser.ImageAnalyser;

/**
 * A {@link FeatureExtractor} that wraps {@link ImageAnalyser}s that
 * can provide {@link FeatureVector}s through {@link FeatureVectorProvider}.
 * 
 * @author Jonathon Hare (jsh2@ecs.soton.ac.uk)
 *
 * @param <ANALYSER> Type of ImageAnalyser 
 * @param <IMAGE> Type of image
 * @param <FEATURE> Type of feature
 */
public class ImageAnalyserFVFeatureExtractor<
	ANALYSER extends ImageAnalyser<IMAGE> & FeatureVectorProvider<FEATURE>,
	IMAGE extends Image<?, IMAGE>,
	FEATURE extends FeatureVector
> implements FeatureExtractor<FEATURE, IMAGE> 
{
	private ANALYSER analyser;
	
	/**
	 * Construct with the given analyser
	 * @param analyser the analyser
	 */
	public ImageAnalyserFVFeatureExtractor(ANALYSER analyser) {
		this.analyser = analyser;
	}
	
	@Override
	public synchronized FEATURE extractFeature(IMAGE object) {
		analyser.analyseImage(object);
		return analyser.getFeatureVector();
	}
}
