SurfPlanar_to_DescribeRegionPoint.java

/*
 * Copyright (c) 2011-2016, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package boofcv.abst.feature.describe;

import boofcv.alg.feature.describe.DescribePointSurfPlanar;
import boofcv.alg.transform.ii.GIntegralImageOps;
import boofcv.core.image.GConvertImage;
import boofcv.core.image.GeneralizedImageOps;
import boofcv.struct.BoofDefaults;
import boofcv.struct.feature.BrightFeature;
import boofcv.struct.image.ImageGray;
import boofcv.struct.image.ImageType;
import boofcv.struct.image.Planar;

/**
 * Wrapper around {@link DescribePointSurfPlanar} for {@link DescribeRegionPoint}
 *
 * @param <T> Image band type
 * @param <II> Integral image type
 *
 * @author Peter Abeles
 */
public class SurfPlanar_to_DescribeRegionPoint<T extends ImageGray, II extends ImageGray>
	implements DescribeRegionPoint<Planar<T>,BrightFeature>
{
	DescribePointSurfPlanar<II> alg;

	T gray;
	II grayII;
	Planar<II> bandII;

	ImageType<Planar<T>> imageType;

	public SurfPlanar_to_DescribeRegionPoint(DescribePointSurfPlanar<II> alg,
											 Class<T> imageType, Class<II> integralType ) {
		this.alg = alg;

		gray = GeneralizedImageOps.createSingleBand(imageType, 1, 1);
		grayII = GeneralizedImageOps.createSingleBand(integralType,1,1);
		bandII = new Planar<>(integralType, 1, 1, alg.getNumBands());

		this.imageType = ImageType.pl(alg.getNumBands(), imageType);
	}

	@Override
	public void setImage(Planar<T> image) {
		gray.reshape(image.width,image.height);
		grayII.reshape(image.width,image.height);
		bandII.reshape(image.width,image.height);

		GConvertImage.average(image, gray);
		GIntegralImageOps.transform(gray, grayII);
		for( int i = 0; i < image.getNumBands(); i++)
			GIntegralImageOps.transform(image.getBand(i), bandII.getBand(i));

		alg.setImage(grayII,bandII);
	}

	@Override
	public boolean process(double x, double y, double orientation, double radius, BrightFeature description) {

		alg.describe(x,y,orientation, radius/ BoofDefaults.SURF_SCALE_TO_RADIUS,description);

		return true;
	}

	@Override
	public boolean requiresRadius() {
		return true;
	}

	@Override
	public boolean requiresOrientation() {
		return true;
	}

	@Override
	public ImageType<Planar<T>> getImageType() {
		return imageType;
	}

	@Override
	public double getCanonicalWidth() {
		return alg.getDescribe().getCanonicalWidth();
	}

	@Override
	public BrightFeature createDescription() {
		return alg.createDescription();
	}

	@Override
	public Class<BrightFeature> getDescriptionType() {
		return BrightFeature.class;
	}
}