root / org.gvsig.toolbox / trunk / org.gvsig.toolbox / org.gvsig.toolbox.algorithm / src / main / java / es / unex / sextante / vegetationIndices / ctvi / CTVIAlgorithm.java @ 59
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1 | 59 | nbrodin | /*******************************************************************************
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2 | CTVIAlgorithm.java
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3 | Copyright (C) Victor Olaya
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4 | |||
5 | This program is free software; you can redistribute it and/or modify
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6 | it under the terms of the GNU General Public License as published by
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7 | the Free Software Foundation; either version 2 of the License, or
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8 | (at your option) any later version.
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9 | |||
10 | This program is distributed in the hope that it will be useful,
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | GNU General Public License for more details.
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14 | |||
15 | You should have received a copy of the GNU General Public License
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16 | along with this program; if not, write to the Free Software
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17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 | *******************************************************************************/
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19 | package es.unex.sextante.vegetationIndices.ctvi; |
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21 | import es.unex.sextante.vegetationIndices.base.SlopeBasedAlgorithm; |
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22 | |||
23 | public class CTVIAlgorithm |
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24 | extends
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25 | SlopeBasedAlgorithm { |
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27 | |||
28 | @Override
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29 | public void defineCharacteristics() { |
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30 | |||
31 | super.defineCharacteristics();
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32 | |||
33 | setName("CTVI");
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34 | |||
35 | } |
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36 | |||
37 | |||
38 | @Override
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39 | protected double getIndex(final double dRed, |
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40 | final double dNIR) { |
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42 | final double dNDVI = getNDVI(dRed, dNIR); |
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44 | return (dNDVI + 0.5) / Math.abs(dNDVI + 0.5) * Math.sqrt(Math.abs(dNDVI + 0.5)); |
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46 | } |
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48 | } |