Examples of java.awt.image.ColorConvertOp

java.awt.image.ColorConvertOp
This class performs a pixel-by-pixel color conversion of the data in the source image. The resulting color values are scaled to the precision of the destination image. Color conversion can be specified via an array of ColorSpace objects or an array of ICC_Profile objects.
If the source is a BufferedImage with premultiplied alpha, the color components are divided by the alpha component before color conversion. If the destination is a BufferedImage with premultiplied alpha, the color components are multiplied by the alpha component after conversion. Rasters are treated as having no alpha channel, i.e. all bands are color bands.
If a RenderingHints object is specified in the constructor, the color rendering hint and the dithering hint may be used to control color conversion.
Note that Source and Destination may be the same object.
@see java.awt.RenderingHints#KEY_COLOR_RENDERING @see java.awt.RenderingHints#KEY_DITHERING

    // dumpColorSpace("\tcs_sRGB", cs_sRGB);
    // dumpColorSpace("\tColorModel.getRGBdefaultc",
    // ColorModel.getRGBdefault().getColorSpace());


    bi = relabelColorSpace(bi, from);
    ColorConvertOp op = new ColorConvertOp(from, to, hints);
    bi = op.filter(bi, null);


    bi = relabelColorSpace(bi, from);


    bi = op.filter(bi, null);


    bi = relabelColorSpace(bi, to);


    return bi;

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    hints.put(RenderingHints.KEY_COLOR_RENDERING,
        RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    hints.put(RenderingHints.KEY_DITHERING,
        RenderingHints.VALUE_DITHER_ENABLE);


    ColorConvertOp op = new ColorConvertOp(from, to, hints);


    bi = relabelColorSpace(bi, from);


    BufferedImage result = op.filter(bi, null);


    result = relabelColorSpace(result, to);


    return result;
  }

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        BufferedImage buf = new BufferedImage(img.getWidth(), img.getHeight(), 
                BufferedImage.TYPE_BYTE_BINARY);
        RenderingHints hints = new RenderingHints(null);
        //This hint doesn't seem to make a difference :-(
        hints.put(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
        ColorConvertOp op = new ColorConvertOp(
                ColorSpace.getInstance(ColorSpace.CS_GRAY), hints);
        op.filter(img, buf);
        return buf;
    }

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            BufferedImage src = null;
            if (img instanceof BufferedImage && !scaled) {
                if (!isGrayscaleImage(img) || img.getColorModel().hasAlpha()) {
                    src = new BufferedImage(effDim.width, effDim.height, 
                            BufferedImage.TYPE_BYTE_GRAY);
                    ColorConvertOp op = new ColorConvertOp(
                            ColorSpace.getInstance(ColorSpace.CS_GRAY), null);
                    op.filter((BufferedImage)img, src);
                } else {
                    src = (BufferedImage)img;
                }
            }
            if (src == null) {

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      BufferedImage image = ImageIO.read(data);
      // If it is not a gray scale image
      if (image.getType() != BufferedImage.TYPE_BYTE_GRAY) {
        // Convert the image to grayscale;
        ColorConvertOp conv = new ColorConvertOp(
            ColorSpace.getInstance(ColorSpace.CS_GRAY), null);
        conv.filter(image, image);
      }


      // Rescale the image
      image = RescaleImage(image, width.intValue(), height.intValue());

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                                  null);


        // System.out.println("src: " + srcBI.getWidth() + "x" +
        //                    srcBI.getHeight());


        ColorConvertOp op = new ColorConvertOp(dstCM.getColorSpace(),
                                               null);
        dstBI = op.filter(srcBI, null);


        // System.out.println("After filter:");


        WritableRaster wr00 = wr.createWritableTranslatedChild(0,0);
        for (int i=0; i<dstCM.getColorSpace().getNumComponents(); i++)

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    public WritableRaster apply( WritableRaster image ) {
        if( ! enabled ) {
            return image;
        }
        ColorSpace grayspace = ColorSpace.getInstance( ColorSpace.CS_GRAY );
        ColorConvertOp op = new ColorConvertOp( grayspace, null );
        WritableRaster r = op.filter( image, null );
        return r;
    }

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             *                    srcBI.getHeight());
             * System.out.println("dst: " + dstBI.getWidth() + "x" +
             *                    dstBI.getHeight());
             */


            ColorConvertOp op = new ColorConvertOp(null);
            op.filter(srcBI, dstBI);


            if (dstCM.hasAlpha())
                copyBand(srcWr, srcSM.getNumBands()-1,
                         wr,    getSampleModel().getNumBands()-1);
        }

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    if (isGreyscale(cs) && bpc <= 8 && getDecode() == null
        && jpegData == null) {
      bi = convertGreyscaleToArgb(data, bi);
    } else if (!isImageMask() && cs instanceof ICC_ColorSpace
        && !cs.equals(rgbCS)) {
      ColorConvertOp op = new ColorConvertOp(cs, rgbCS, null);


      BufferedImage converted = new BufferedImage(getWidth(),
          getHeight(), BufferedImage.TYPE_INT_ARGB);


      bi = op.filter(bi, converted);
    }


    // add in the alpha data supplied by the SMask, if any
    PDFImage sMaskImage = getSMask();
    if (sMaskImage != null) {

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        new DataBufferInt(argbVals, argbVals.length), argbVals.length,
        1, argbVals.length, ((PackedColorModel) ccm).getMasks(), null);
    final BufferedImage srgbImage = new BufferedImage(ccm, outRaster,
        false, null);


    final ColorConvertOp op = new ColorConvertOp(greyCs,
        ColorSpace.getInstance(ColorSpace.CS_sRGB), null);


    op.filter(greyImage, srgbImage);


    GREY_TO_ARGB[numBits - 1] = argbVals;
    return argbVals;
  }

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