gvsig-raster / org.gvsig.raster / branches / org.gvsig.raster.2.4 / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.buffer / org.gvsig.raster.lib.buffer.impl / src / main / java / org / gvsig / raster / lib / buffer / impl / operations / linearstretchenhancement / LinearStretchEnhancementOperation.java @ 8682
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/* gvSIG. Desktop Geographic Information System.
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*
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* Copyright ? 2007-2017 gvSIG Association
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
|
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.raster.lib.buffer.impl.operations.linearstretchenhancement; |
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import org.gvsig.fmap.geom.exception.CreateEnvelopeException; |
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import org.gvsig.raster.lib.buffer.api.Band; |
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import org.gvsig.raster.lib.buffer.api.BufferLocator; |
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import org.gvsig.raster.lib.buffer.api.BufferManager; |
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import org.gvsig.raster.lib.buffer.api.NoData; |
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import org.gvsig.raster.lib.buffer.api.exceptions.BandException; |
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import org.gvsig.raster.lib.buffer.api.exceptions.BufferException; |
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import org.gvsig.raster.lib.buffer.api.exceptions.BufferOperationException; |
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import org.gvsig.raster.lib.buffer.api.operations.OperationFactory; |
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import org.gvsig.raster.lib.buffer.api.statistics.Statistics; |
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import org.gvsig.raster.lib.buffer.impl.DefaultNoData; |
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import org.gvsig.raster.lib.buffer.spi.exceptions.ProcessingOperationException; |
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import org.gvsig.raster.lib.buffer.spi.operations.AbstractSpecifiedBandsOperation; |
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import org.gvsig.tools.locator.LocatorException; |
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/**
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* @author fdiaz
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*
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*/
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public class LinearStretchEnhancementOperation extends AbstractSpecifiedBandsOperation{ |
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static public String STATISTICS_PARAM = "statistics"; |
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static public String REMOVE_ENDS_PARAM = "remove_ends"; |
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static public String TAIL_TRIM_PARAM = "tail_trim"; |
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static public String TAIL_TRIM_PERCENT_PARAM = "tail_trim_percent"; |
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private Statistics statistics;
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private boolean removeEnds; |
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private boolean tailTrim; |
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private double tailTrimPercent; |
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private RowProcessor[] rowProcessors; |
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/**
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* @param factory
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*
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*/
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public LinearStretchEnhancementOperation(OperationFactory factory) {
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this.factory = factory;
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} |
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@Override
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public void preProcess() throws BufferOperationException { |
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super.preProcess();
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BufferManager manager = BufferLocator.getBufferManager(); |
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if(this.parameters.getDynClass().getDynField(STATISTICS_PARAM)!=null) { |
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statistics = (Statistics) this.parameters.getDynValue(STATISTICS_PARAM);
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} |
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if (statistics == null) { |
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statistics = this.buffer.getStatistics(null); |
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}; |
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if(this.parameters.getDynClass().getDynField(REMOVE_ENDS_PARAM)!=null) { |
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removeEnds = (Boolean)this.parameters.getDynValue(REMOVE_ENDS_PARAM); |
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} else {
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removeEnds = false;
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}; |
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if(this.parameters.getDynClass().getDynField(TAIL_TRIM_PARAM)!=null) { |
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tailTrim = (Boolean)this.parameters.getDynValue(TAIL_TRIM_PARAM); |
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} else {
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tailTrim = false;
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}; |
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if(this.parameters.getDynClass().getDynField(TAIL_TRIM_PERCENT_PARAM)!=null) { |
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tailTrimPercent = (Double)this.parameters.getDynValue(TAIL_TRIM_PERCENT_PARAM); |
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tailTrimPercent = (tailTrimPercent>100)?100:tailTrimPercent; |
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tailTrimPercent = (tailTrimPercent<0)?0:tailTrimPercent; |
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} else {
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tailTrimPercent = 0; // FIXME: ?0 o 100? |
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}; |
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int bands = this.buffer.getBandCount(); |
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rowProcessors = new RowProcessor[bands];
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int [] bandTypes = new int[bands]; |
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//FIXME: Falta la gesti?n del par?metro copyUnprocessedBands, de momento se copian sin tenerlo en cuenta
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for (int i = 0; i < bandTypes.length; i++) { |
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if(bandsToProcess.contains(i)){
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bandTypes[i] = BufferManager.TYPE_BYTE; |
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} else {
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bandTypes[i] = this.buffer.getBandTypes()[i];
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} |
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} |
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NoData[] noData = this.buffer.getBandNoData(); |
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NoData[] resultNoData = new NoData[noData.length]; |
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for (int band = 0; band < noData.length; band++) { |
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int bandType = this.buffer.getBand(band).getDataType(); |
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switch (bandType) {
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case BufferManager.TYPE_BYTE:
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rowProcessors[band] = new ByteRowProcessor(band);
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break;
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case BufferManager.TYPE_USHORT:
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rowProcessors[band] = new UShortRowProcessor(band);
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break;
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case BufferManager.TYPE_SHORT:
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rowProcessors[band] = new ShortRowProcessor(band);
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break;
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case BufferManager.TYPE_INT:
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rowProcessors[band] = new IntRowProcessor(band);
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break;
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case BufferManager.TYPE_FLOAT:
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rowProcessors[band] = new FloatRowProcessor(band);
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break;
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case BufferManager.TYPE_DOUBLE:
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rowProcessors[band] = new DoubleRowProcessor(band);
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break;
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default:
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throw new IllegalArgumentException("Unknow type of band '"+band+"'"); |
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} |
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if(noData[band].isDefined()){
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resultNoData[band] = new DefaultNoData((byte)0); |
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resultNoData[band] = manager.createNoData((byte)0,(byte)0); |
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} else {
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resultNoData[band]=manager.createNoData(null, null); |
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} |
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} |
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try {
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this.outputBuffer = manager.createBuffer(
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this.buffer.getRows(),
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this.buffer.getColumns(),
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bandTypes, |
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resultNoData, |
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this.buffer.getProjection(),
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this.buffer.getEnvelope());
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} catch (LocatorException | BufferException | CreateEnvelopeException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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} |
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@Override
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public void process() throws ProcessingOperationException { |
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super.process();
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for (int band=0; band<this.buffer.getBandCount(); band++){ |
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if (bandsToProcess.contains(band)) {
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Band bufferBand = this.buffer.getBand(band);
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Band outputBufferBand = this.outputBuffer.getBand(band);
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for (int row = 0; row < this.buffer.getRows(); row++) { |
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Object rowBuffer = bufferBand.createRowBuffer();
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bufferBand.fetchRow(row, rowBuffer); |
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Object outputRowBuffer = outputBufferBand.createRowBuffer();
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outputBufferBand.fetchRow(row, outputRowBuffer); |
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rowProcessors[band].processRow(rowBuffer, outputRowBuffer); |
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outputBufferBand.putRow(row, outputRowBuffer); |
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} |
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} else {
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try {
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this.outputBuffer.getBand(band).copyFrom(this.buffer.getBand(band)); |
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} catch (BandException e) {
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throw new ProcessingOperationException(e); |
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} |
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} |
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} |
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} |
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@Override
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public void postProcess() throws BufferOperationException { |
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super.postProcess();
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} |
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interface RowProcessor { |
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void processRow(Object inputRow, Object outputRow); |
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byte processValue(Object value); |
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}; |
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private abstract class AbstractRowProcessor implements RowProcessor { |
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int band;
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double minValue;
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double maxValue;
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double maxResult = 255; |
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double minResult = 0; |
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NoData noData; |
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public AbstractRowProcessor(int band) { |
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this.band = band;
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noData = buffer.getBand(band).getNoData(); |
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if(noData.isDefined()) {
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minResult = (byte)1; |
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} |
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minValue = statistics.getMin()[band]; |
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maxValue = statistics.getMax()[band]; |
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if(removeEnds) {
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minValue = statistics.getSecondMin()[band]; |
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maxValue = statistics.getSecondMax()[band]; |
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} |
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if(tailTrim) {
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double[][] tailTrim = statistics.getTailTrimValue(tailTrimPercent); |
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minValue = tailTrim[band][0];
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maxValue = tailTrim[band][1];
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} |
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} |
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} |
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private class ByteRowProcessor extends AbstractRowProcessor { |
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public ByteRowProcessor(int band) { |
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super(band);
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} |
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@Override
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public void processRow(Object inputRow, Object outputRow) { |
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byte[] inputByteRow = (byte[])inputRow; |
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byte[] outputByteRow = (byte[])outputRow; |
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for (int i = 0; i < inputByteRow.length; i++) { |
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outputByteRow[i] = processValue(inputByteRow[i]); |
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} |
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} |
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@Override
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public byte processValue(Object value) { |
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if(noData.isDefined() && noData.getValue().equals(value)){
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return (byte)0; |
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} |
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int iValue = 0xFF & ((Byte) value).byteValue(); |
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Double dValue = new Double(iValue); |
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double result;
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if(dValue < minValue){
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result = minResult; |
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} else if (dValue > maxValue){ |
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result = maxResult; |
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} else {
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double ratio = (maxResult - minResult) / (maxValue - minValue);
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result = (dValue-minValue) * ratio + minResult; |
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} |
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return (byte)result; |
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} |
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} |
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private class ShortRowProcessor extends AbstractRowProcessor { |
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public ShortRowProcessor(int band) { |
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super(band);
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} |
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@Override
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public void processRow(Object inputRow, Object outputRow) { |
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short[] inputByteRow = (short[])inputRow; |
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byte[] outputByteRow = (byte[])outputRow; |
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for (int i = 0; i < inputByteRow.length; i++) { |
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outputByteRow[i] = processValue(inputByteRow[i]); |
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} |
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} |
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@Override
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public byte processValue(Object value) { |
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if(noData.isDefined() && noData.getValue().equals(value)){
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return (byte)0; |
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} |
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int iValue = ((Short) value).shortValue(); |
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Double dValue = ((Number) iValue).doubleValue(); |
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double result;
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if(dValue < minValue){
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result = minResult; |
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} else if (dValue > maxValue){ |
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result = maxResult; |
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} else {
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double ratio = (maxResult - minResult) / (maxValue - minValue);
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result = (dValue-minValue) * ratio + minResult; |
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} |
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return (byte)result; |
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} |
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} |
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private class UShortRowProcessor extends AbstractRowProcessor { |
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public UShortRowProcessor(int band) { |
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super(band);
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} |
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@Override
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public void processRow(Object inputRow, Object outputRow) { |
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short[] inputByteRow = (short[])inputRow; |
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byte[] outputByteRow = (byte[])outputRow; |
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for (int i = 0; i < inputByteRow.length; i++) { |
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outputByteRow[i] = processValue(inputByteRow[i]); |
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} |
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} |
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@Override
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public byte processValue(Object value) { |
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if(noData.isDefined() && noData.getValue().equals(value)){
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return (byte)0; |
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} |
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//FIXME ???:
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int iValue = 0xFFFF & ((Short) value).shortValue(); |
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Double dValue = ((Number) iValue).doubleValue(); |
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double result;
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if(dValue < minValue){
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result = minResult; |
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} else if (dValue > maxValue){ |
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result = maxResult; |
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} else {
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double ratio = (maxResult - minResult) / (maxValue - minValue);
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result = (dValue-minValue) * ratio + minResult; |
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} |
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return (byte)result; |
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} |
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} |
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private class IntRowProcessor extends AbstractRowProcessor { |
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public IntRowProcessor(int band) { |
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super(band);
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} |
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@Override
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public void processRow(Object inputRow, Object outputRow) { |
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int[] inputByteRow = (int[])inputRow; |
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byte[] outputByteRow = (byte[])outputRow; |
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for (int i = 0; i < inputByteRow.length; i++) { |
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outputByteRow[i] = processValue(inputByteRow[i]); |
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} |
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} |
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@Override
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public byte processValue(Object value) { |
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if(noData.isDefined() && noData.getValue().equals(value)){
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return (byte)0; |
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} |
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Double dValue = ((Number) value).doubleValue(); |
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double result;
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if(dValue < minValue){
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result = minResult; |
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} else if (dValue > maxValue){ |
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result = maxResult; |
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} else {
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double ratio = (maxResult - minResult) / (maxValue - minValue);
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result = (dValue-minValue) * ratio + minResult; |
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} |
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return (byte)result; |
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} |
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} |
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private class FloatRowProcessor extends AbstractRowProcessor { |
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public FloatRowProcessor(int band) { |
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super(band);
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} |
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@Override
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public void processRow(Object inputRow, Object outputRow) { |
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float[] inputByteRow = (float[])inputRow; |
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byte[] outputByteRow = (byte[])outputRow; |
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for (int i = 0; i < inputByteRow.length; i++) { |
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outputByteRow[i] = processValue(inputByteRow[i]); |
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} |
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} |
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@Override
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public byte processValue(Object value) { |
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if(noData.isDefined() && noData.getValue().equals(value)){
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return (byte)0; |
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} |
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Double dValue = ((Number) value).doubleValue(); |
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double result;
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if(dValue < minValue){
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result = minResult; |
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} else if (dValue > maxValue){ |
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result = maxResult; |
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} else {
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double ratio = (maxResult - minResult) / (maxValue - minValue);
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result = (dValue-minValue) * ratio + minResult; |
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} |
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return (byte)result; |
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} |
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} |
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private class DoubleRowProcessor extends AbstractRowProcessor { |
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public DoubleRowProcessor(int band) { |
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super(band);
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} |
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@Override
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public void processRow(Object inputRow, Object outputRow) { |
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double[] inputByteRow = (double[])inputRow; |
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byte[] outputByteRow = (byte[])outputRow; |
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for (int i = 0; i < inputByteRow.length; i++) { |
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outputByteRow[i] = processValue(inputByteRow[i]); |
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} |
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} |
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@Override
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public byte processValue(Object value) { |
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if(noData.isDefined() && noData.getValue().equals(value)){
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return (byte)0; |
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} |
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Double dValue = ((Number) value).doubleValue(); |
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double result;
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if(dValue < minValue){
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result = minResult; |
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} else if (dValue > maxValue){ |
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result = maxResult; |
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} else {
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double ratio = (maxResult - minResult) / (maxValue - minValue);
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result = (dValue-minValue) * ratio + minResult; |
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} |
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return (byte)result; |
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} |
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} |
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} |