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

                                  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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             *                    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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            false, false, Transparency.OPAQUE, raster.getDataBuffer().getDataType());


        BufferedImage src = new BufferedImage(colorModel, raster, false, null);
        BufferedImage dest = new BufferedImage(raster.getWidth(), raster.getHeight(),
                                               BufferedImage.TYPE_INT_RGB);
        ColorConvertOp op = new ColorConvertOp(null);
        op.filter(src, dest);
        return dest;
    }

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                (DataBuffer.TYPE_BYTE, argbWR.getWidth(), argbWR.getHeight(),
                 sRGBCompCM.getNumComponents(), new Point(0, 0));


            BufferedImage sRGBImage = new BufferedImage
                (sRGBCompCM, wr, false, null);
            ColorConvertOp colorConvertOp = new ColorConvertOp(null);
            colorConvertOp.filter(newImg, sRGBImage);


            /**
             * Integrate alpha back into the image if there is any
             */
            if (imgCM.hasAlpha()){

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      BufferedImage image1=null, image2 = null;
      image1 = graph.getImage();
      image2 = image1.getSubimage(275, 150, 250, 300);
      ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
      ColorConvertOp op = new ColorConvertOp(cs, null);  
      image1 = op.filter(image2, null); 
      BufferedImage image3 = image1.getSubimage(0, 0, 125, 150); 
      File outputfile = new File("C://temp.png");
      JFileChooser jf = new JFileChooser();
      jf.setMultiSelectionEnabled(false);
      jf.showSaveDialog(jPanelImagem);

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    // Create an image to work on
    BufferedImage img = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
    Graphics2D g = (Graphics2D)img.getGraphics();
    g.draw(new Line2D.Double(0, 0, 20, 20));
    
    ColorConvertOp op = new ColorConvertOp(null);
    
    // Src and dst images can be the same (unlike some other Ops)
    try
    {
      op.filter(img, img);
      harness.check(true);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // Src and dst are different sizes (not allowed, unlike some other Ops)
    BufferedImage dst = new BufferedImage(30, 40, BufferedImage.TYPE_INT_RGB);
    try
    {
      op.filter(img, dst);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
    
    // Dst cannot be null for this ColorConvertOp
    try
    {
      op.filter(img, null);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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    BufferedImage img = new BufferedImage(20, 20, BufferedImage.TYPE_USHORT_GRAY);
    Graphics2D g = (Graphics2D)img.getGraphics();
    g.draw(new Line2D.Double(0, 0, 20, 20));
    
    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorConvertOp op = new ColorConvertOp(cs, null);
    
    // Check null destination
    try
    {
      BufferedImage dst = op.filter(img, null);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
      // Any other checks to run?  Show the data was filtered properly?
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // Check non-null destination
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_INT_RGB);
      dst = op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
      // Any other checks to run?
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // Can we introduce an alpha?
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB);
      dst = op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
      // Any other checks to run?
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    // Different destination type: this should end up as GRAY, via RGB
    // (but how can I test the intermediate step?)
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_BYTE_GRAY);
      dst = op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_GRAY);
      // Any other checks to run?
    }
    catch (IllegalArgumentException e)
    {

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    ColorSpace cs1 = ColorSpace.getInstance(ColorSpace.CS_CIEXYZ);
    //ColorSpace cs2 = ColorSpace.getInstance(ColorSpace.CS_PYCC);
       // PYCC is not implemented
    ColorSpace cs2 = ColorSpace.getInstance(ColorSpace.CS_sRGB);
    ColorConvertOp op = new ColorConvertOp(cs1, cs2, null);


    // Simpler tests (ie, src != dest) are skipped, assume they work here if
    // they worked earlier
    
    try
    {
      BufferedImage dst = op.filter(img, null);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
      // PYCC would have been ColorSpace.TYPE_3CLR
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);
    }
   
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB_PRE);
      op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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    g.draw(new Line2D.Double(0, 0, 20, 20));
    
    ICC_Profile[] profile = new ICC_Profile[] {ICC_Profile.getInstance(ColorSpace.CS_LINEAR_RGB),
                                               ICC_Profile.getInstance(ColorSpace.CS_CIEXYZ),
                                               ICC_Profile.getInstance(ColorSpace.CS_sRGB)};
    ColorConvertOp op = new ColorConvertOp(profile, null);
    
    try
    {
      BufferedImage dst = op.filter(img, null);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);
    }
    
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_BYTE_GRAY);
      dst = op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_GRAY);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);

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    harness.checkPoint("getPoint2D");
    
    //  This is a simple test; the Op should not change the
    // geometry of the raster
    
    ColorConvertOp op = new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_sRGB),
                                           null);
    Point2D dest = null;
    dest = op.getPoint2D(new Point2D.Double(3, 3), dest);
    harness.check(dest, new Point2D.Double(3, 3));
  }

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