Examples of BandCombineOp

java.awt.image.BandCombineOp

This class performs an arbitrary linear combination of the bands in a Raster, using a specified matrix.

The width of the matrix must be equal to the number of bands in the source Raster, optionally plus one. If there is one more column in the matrix than the number of bands, there is an implied 1 at the end of the vector of band samples representing a pixel. The height of the matrix must be equal to the number of bands in the destination.

For example, a 3-banded Raster might have the following transformation applied to each pixel in order to invert the second band of the Raster.

 [ 1.0   0.0   0.0    0.0  ]     [ b1 ]     [ 0.0  -1.0   0.0  255.0  ]  x  [ b2 ] [ 0.0   0.0   1.0    0.0  ]     [ b3 ] [ 1 ]

Note that the source and destination can be the same object. @version 10 Feb 1997


        final int srcMinX = srcRI.getMinX();
        final int srcMinY = srcRI.getMinY();


        RenderingHints hints = rc.getRenderingHints();
        BandCombineOp op = new BandCombineOp(matrix, null);


        //
        // Wrap source in buffered image
        //
        ColorModel cm = srcRI.getColorModel();
        Raster srcRR = srcRI.getData();
        Point origin = new Point(0, 0);
        WritableRaster srcWR = Raster.createWritableRaster(srcRR.getSampleModel(),
                                                           srcRR.getDataBuffer(),
                                                           origin);
        /*
        BufferedImage srcBI = new BufferedImage(cm,
                                                srcWR,
                                                cm.isAlphaPremultiplied(),
                                                null);*/


        WritableRaster dstWR = op.filter(srcWR, srcWR);


        BufferedImage dstBI = new BufferedImage(cm,
                                                dstWR,
                                                cm.isAlphaPremultiplied(),
                                                null);

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

Examples of BandCombineOp

Examples of java.awt.image.BandCombineOp