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BoofCV is an open source Java library for real-time computer vision and robotics applications.

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/*
 * Copyright (c) 2011-2013, 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.struct.pyramid;

import boofcv.struct.image.ImageSingleBand;


/**
 * 

* An image pyramid where each level can be an arbitrary scale. Higher levels in the pyramid * are sub-sampled from lower levels in the pyramid allowing fractions of a pixel change. This * added flexibility comes at the cost of some performance relative to {@link PyramidDiscrete}. *

* *

* An {@link ImagePyramid} where the scale factor between each level is specified using a floating point number. *

* * @author Peter Abeles */ @SuppressWarnings({"unchecked"}) public abstract class PyramidFloat extends ImagePyramidBase { // scale of each layer relative to the previous layer public double scale[]; /** * Defines the image pyramid. * * @param imageType Type of image * @param scaleFactors (optional) Specifies the scale of each layer in the pyramid. See restrictions * on scaleFactor in {@link #setScaleFactors(double...)}. */ public PyramidFloat( Class imageType , double ...scaleFactors ) { super(imageType,false); if( scaleFactors.length > 0 ) setScaleFactors(scaleFactors); } /** * Specifies the pyramid's structure. * * @param scaleFactors Change in scale factor for each layer in the pyramid. */ public void setScaleFactors( double ...scaleFactors ) { // see if the scale factors have not changed if( scale != null && scale.length == scaleFactors.length ) { boolean theSame = true; for( int i = 0; i < scale.length; i++ ) { if( scale[i] != scaleFactors[i] ) { theSame = false; break; } } // no changes needed if( theSame ) return; } // set width/height to zero to force the image to be redeclared bottomWidth = bottomHeight = 0; this.scale = scaleFactors.clone(); checkScales(); } @Override public double getScale(int layer) { return scale[layer]; } @Override public int getNumLayers() { return scale.length; } }




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