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Methods for the extraction of low-level image features, including global image features and pixel/patch classification models.
/**
* 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.DoubleFV;
import org.openimaj.feature.FeatureExtractor;
import org.openimaj.image.FImage;
import org.openimaj.util.array.ArrayUtils;
/**
* Transform a {@link DoubleFV} into an {@link FImage}. Note: this makes a copy
* of the data
*
* @author Jonathon Hare ([email protected])
*
*/
public class DoubleFV2FImage implements FeatureExtractor {
/**
* the image width
*/
public int width;
/**
* the image height
*/
public int height;
/**
* Construct the converter with the given image size
*
* @param width
* @param height
*/
public DoubleFV2FImage(int width, int height) {
this.width = width;
this.height = height;
}
@Override
public FImage extractFeature(DoubleFV object) {
return new FImage(ArrayUtils.reshapeFloat(object.values, width, height));
}
/**
* Transform a {@link DoubleFV} into an {@link FImage}. Note: this makes a
* copy of the data.
*
* @param fv
* the feature vector
* @param width
* the image width
* @param height
* the image height
* @return the image
*/
public static FImage extractFeature(DoubleFV fv, int width, int height) {
return new FImage(ArrayUtils.reshapeFloat(fv.values, width, height));
}
}
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