Revision 8682 org.gvsig.raster/branches/org.gvsig.raster.2.4/org.gvsig.raster/org.gvsig.raster.lib/org.gvsig.raster.lib.legend/org.gvsig.raster.lib.legend.impl/src/main/java/org/gvsig/raster/lib/legend/impl/operations/contrast/ContrastOperation.java

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ContrastOperation.java
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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.impl.exceptions.ProcessingOperationException;
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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.AbstractOperation;
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import org.gvsig.raster.lib.legend.api.RasterLegendLocator;
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import org.gvsig.raster.lib.legend.api.RasterLegendManager;
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import org.gvsig.raster.lib.legend.api.colorinterpretation.ColorInterpretation;
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import org.gvsig.raster.lib.legend.spi.AbstractColoredOperation;
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import org.gvsig.tools.locator.LocatorException;
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 * @author fdiaz


  		




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 *


  		




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 */


  		




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public class ContrastOperation extends AbstractOperation{


  		




  
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public class ContrastOperation extends AbstractColoredOperation{


  		




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    static public String COLOR_INTERPRETATION_PARAM = "color_interpretation";


  		




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    static public String CONTRAST_PARAM = "contrast";


  		




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    static public String COPY_UNPROCESSED_BANDS_PARAM = "copy_unprocessed_bands";


  		




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    static public String OUTPUT_COLOR_INTERPRETATION_PARAM = "output_color_interpretation";


  		




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    private ColorInterpretation colorInterpretation;


  		




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    private int contrast;


  		




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    private boolean copyUnprocessedBands;


  		




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    private RowProcessor rowProcessor;


  		




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    private ColorInterpretation outputColorInterpretation;


  		




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    /**


  		




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     * @param factory


  		




  ......




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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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        RasterLegendManager legendManager = RasterLegendLocator.getRasterLegendManager();


  		




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        colorInterpretation = (ColorInterpretation) this.parameters.getDynValue(COLOR_INTERPRETATION_PARAM);


  		




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        contrast = (Integer) this.parameters.getDynValue(CONTRAST_PARAM);


  		




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        if (this.parameters.hasDynValue(COPY_UNPROCESSED_BANDS_PARAM)) {


  		




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            copyUnprocessedBands = (Boolean) this.parameters.getDynValue(COPY_UNPROCESSED_BANDS_PARAM);


  		




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        } else {


  		




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            copyUnprocessedBands = true;


  		




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        }


  		




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        int bands = this.buffer.getBandCount();


  		




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        NoData[] noData;


  		




  ......




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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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            rowProcessor = new ByteRowProcessor(band);


  		




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            if (isProcessableBand(band)) {


  		




  ......




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    @Override


  		




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    public void postProcess() throws BufferOperationException {


  		




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        // TODO Auto-generated method stub


  		




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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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