List of retainBands() Examples

Examples of retainBands()

org.geotools.image.ImageWorker.retainBands()
Retains inconditionnaly the first {@code numBands} of {@linkplain #image}. All other bands (if any) are discarted without any further processing. This method does nothing if the current {@linkplain #image} does not have a greater amount of bands than {@code numBands}. @param numBands the number of bands to retain. @return this {@link ImageWorker}. @see #getNumBands @see #retainFirstBand @see BandSelectDescriptor

Examples of org.geotools.image.ImageWorker.retainBands()

    // With index color model we want just the first band
    //
    // /////////////////////////////////////////////////////////////////////
    if (image.getColorModel() instanceof IndexColorModel
        && (image.getSampleModel().getNumBands() > 1)) {
      worker.retainBands(1);
      image = worker.getRenderedImage();
    }


    /**
     * For the moment we do not work with DirectColorModel but instead we

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Examples of org.geotools.image.ImageWorker.retainBands()

                //
                // I have to select the alpha band and provide it to the final
                // mosaic operator. I have to force going to ComponentColorModel in
                // case the image is indexed.
                //
                alphaChannel = w.retainBands(alphaIndex).getPlanarImage();
            }
        
        
            //
            // ROI

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