/*
* 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.factory.transform.pyramid;
import boofcv.alg.transform.pyramid.PyramidFloatGaussianScale;
import boofcv.struct.image.GrayF32;
import boofcv.struct.pyramid.PyramidFloat;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author Peter Abeles
*/
public class TestFactoryPyramid {
/**
* Makes sure the correct amount of blur is applied to each layer. The scale and getSigma() should be the same
*/
@Test
public void scaleSpace() {
double ss[] = new double[]{1,2,4,6,8,10};
PyramidFloat<GrayF32> pyramid = FactoryPyramid.scaleSpacePyramid(ss, GrayF32.class);
for( int i = 0; i < ss.length; i++ ) {
assertEquals(ss[i],pyramid.getSigma(i),1e-8);
assertEquals(ss[i],pyramid.getScale(i),1e-8);
// the amount of blur applied to the previous layer should be different
if( i > 1)
assertTrue(Math.abs(ss[i] - ((PyramidFloatGaussianScale)pyramid).getSigmaLayers()[i])>0.1);
}
}
}