Examples of ColorIndexer

org.geotools.image.palette.ColorIndexer
A tool transforming a generic RGBA color into an index into a palette represented by a IndexedColorModel @author Andrea Aime - GeoSolutions

Examples of org.geotools.image.palette.ColorIndexer

        } else {
            if (!(image.getColorModel() instanceof IndexColorModel)) {
                // try to force a RGBA setup
                image = new ImageWorker(image).rescaleToBytes().forceComponentColorModel()
                        .getRenderedImage();
                ColorIndexer indexer = null;
                
                // user provided palette?
                if (mapContent.getPalette() != null) {
                    indexer = new CachingColorIndexer(new LRUColorIndexer(icm, 1024));
                } else if (palettedFormatName.equalsIgnoreCase(format)) {

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Examples of org.geotools.image.palette.ColorIndexer

        if (!(canvas.getColorModel() instanceof IndexColorModel)) {
            // try to force a RGBA setup
            ImageWorker imageWorker = new ImageWorker(canvas);
            RenderedImage image = imageWorker.rescaleToBytes().forceComponentColorModel()
                    .getRenderedImage();
            ColorIndexer indexer = new Quantizer(256).subsample().buildColorIndexer(image);


            // if we have an indexer transform the image
            if (indexer != null) {
                image = ColorIndexerDescriptor.create(image, indexer, null);
            }

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