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LiICQTest.java
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LiICQTest.java
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/*-
* #%L
* Fiji's plugin for colocalization analysis.
* %%
* Copyright (C) 2009 - 2017 Fiji developers.
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
package sc.fiji.coloc.tests;
import static org.junit.Assert.assertTrue;
import net.imglib2.TwinCursor;
import net.imglib2.type.numeric.integer.UnsignedByteType;
import net.imglib2.view.Views;
import org.junit.Test;
import sc.fiji.coloc.algorithms.LiICQ;
/**
* This class contains JUnit 4 test cases for the calculation of Li's
* ICQ value.
*
* @author Dan White
* @author Tom Kazimiers
*/
public class LiICQTest extends ColocalisationTest {
/**
* Checks Li's ICQ value for positive correlated images.
*/
@Test
public void liPositiveCorrTest() {
TwinCursor<UnsignedByteType> cursor = new TwinCursor<UnsignedByteType>(
positiveCorrelationImageCh1.randomAccess(),
positiveCorrelationImageCh2.randomAccess(),
Views.iterable(positiveCorrelationAlwaysTrueMask).localizingCursor());
// calculate Li's ICQ value
double icq = LiICQ.calculateLisICQ(cursor, positiveCorrelationImageCh1Mean,
positiveCorrelationImageCh2Mean);
assertTrue(icq > 0.34 && icq < 0.35);
}
/**
* Checks Li's ICQ value for zero correlated images. The ICQ value
* should be about zero.
*/
@Test
public void liZeroCorrTest() {
TwinCursor<UnsignedByteType> cursor = new TwinCursor<UnsignedByteType>(
zeroCorrelationImageCh1.randomAccess(),
zeroCorrelationImageCh2.randomAccess(),
Views.iterable(zeroCorrelationAlwaysTrueMask).localizingCursor());
// calculate Li's ICQ value
double icq = LiICQ.calculateLisICQ(cursor, zeroCorrelationImageCh1Mean,
zeroCorrelationImageCh2Mean);
assertTrue(Math.abs(icq) < 0.01);
}
}

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