/*
* Encog(tm) Unit Tests v2.5 - Java Version
* http://www.heatonresearch.com/encog/
* http://code.google.com/p/encog-java/
* Copyright 2008-2010 Heaton Research, Inc.
*
* 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
*
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* 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
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package org.encog.neural.data.image;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.util.Iterator;
import javax.swing.JFrame;
import org.encog.neural.data.NeuralData;
import org.encog.neural.data.NeuralDataPair;
import org.encog.neural.data.basic.BasicNeuralData;
import org.encog.util.downsample.Downsample;
import org.encog.util.downsample.SimpleIntensityDownsample;
import org.junit.Assert;
import junit.framework.TestCase;
public class TestImageDataSet extends TestCase {
public void testImageDataSet()
{
JFrame frame = new JFrame();
frame.setVisible(true);
Image image = frame.createImage(10, 10);
Graphics g = image.getGraphics();
g.setColor(Color.BLACK);
g.fillRect(0,0,10,10);
g.setColor(Color.WHITE);
g.fillRect(0, 0, 5, 5);
g.dispose();
Downsample downsample = new SimpleIntensityDownsample();
ImageNeuralDataSet set = new ImageNeuralDataSet(downsample,true,-1,1);
BasicNeuralData ideal = new BasicNeuralData(1);
ImageNeuralData input = new ImageNeuralData(image);
set.add(input,ideal);
set.downsample(2,2);
Iterator<NeuralDataPair> itr = set.iterator();
NeuralDataPair pair = (NeuralDataPair)itr.next();
NeuralData data = pair.getInput();
double[] d = data.getData();
Assert.assertEquals(d[0],-1.0, 0.1);
Assert.assertEquals(d[5],1, 0.1);
// just "flex" these for no exceptions
input.toString();
input.setImage(input.getImage());
}
}