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 * Image processing operations for SciJava Ops.
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package org.scijava.ops.image.morphology.thin;

import org.scijava.ops.image.AbstractOpTest;
import net.imglib2.img.Img;
import net.imglib2.test.ImgLib2Assert;
import net.imglib2.type.logic.BitType;
import net.imglib2.type.numeric.real.FloatType;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.scijava.types.Nil;

/**
 * Tests for morphology thinning ops.
 *
 * @author Kyle Harrington
 */
public class ThinningTest extends AbstractOpTest {

	private Img<BitType> in;
	private Img<BitType> target;

	@BeforeEach
	public void initialize() {
		Img<FloatType> testImg = openRelativeFloatImg(AbstractOpTest.class,
			"features/3d_geometric_features_testlabel.tif");
		in = ops.op("create.img").input(testImg, new BitType()).outType(
			new Nil<Img<BitType>>()
			{}).apply();
		target = ops.op("create.img").input(in, new BitType()).outType(
			new Nil<Img<BitType>>()
			{}).apply();
		ops.op("convert.bit").input(testImg).output(in).compute();

	}

	@Test
	public void testThinGuoHall() {
		final Img<BitType> out = ops.op("morphology.thinGuoHall").input(in).outType(
			new Nil<Img<BitType>>()
			{}).apply();
		ops.op("convert.bit").input(openRelativeFloatImg(AbstractThin.class,
			"result_guoHall.tif")).output(target).compute();
		ImgLib2Assert.assertImageEquals(target, out);
	}

	@Test
	public void testThinHilditch() {
		final Img<BitType> out = ops.op("morphology.thinHilditch").input(in)
			.outType(new Nil<Img<BitType>>()
			{}).apply();
		ops.op("convert.bit").input(openRelativeFloatImg(AbstractThin.class,
			"result_hilditch.tif")).output(target).compute();
		ImgLib2Assert.assertImageEquals(target, out);
	}

	@Test
	public void testMorphological() {
		final Img<BitType> out = ops.op("morphology.thinMorphological").input(in)
			.outType(new Nil<Img<BitType>>()
			{}).apply();
		ops.op("convert.bit").input(openRelativeFloatImg(AbstractThin.class,
			"result_morphological.tif")).output(target).compute();
		ImgLib2Assert.assertImageEquals(target, out);
	}

	@Test
	public void testZhangSuen() {
		final Img<BitType> out = ops.op("morphology.thinZhangSuen").input(in)
			.outType(new Nil<Img<BitType>>()
			{}).apply();
		ops.op("convert.bit").input(openRelativeFloatImg(AbstractThin.class,
			"result_zhangSuen.tif")).output(target).compute();
		ImgLib2Assert.assertImageEquals(target, out);
	}
}
