Examples of javax.media.jai.KernelJAI

javax.media.jai.KernelJAI

A kernel representing a matrix with a key position, used by operators such as Convolve .

A KernelJAI is characterized by its width, height, and origin, or key element. The key element is the element which is placed over the current source pixel to perform convolution or error diffusion.

A kernel K is separable it the outer product of two one-dimensional vectors. It can speed up computation. One can construct a kernel from two one-dimensional vectors. <>The symmetry can be useful (such as computation speedup). Currently the protected instance variables isHorizonallySymmetric and isVerticallySymmetric are set to false. @see javax.media.jai.operator.ConvolveDescriptor @see javax.media.jai.operator.OrderedDitherDescriptor @see javax.media.jai.operator.ErrorDiffusionDescriptor

         * - Transforms into a lower gradient of 1 unit/(kernel size).
         * - Transforms into a gradient of (maximal range)/(kernel size).
         * - Applies an arbitrary correction factor for more convenient range in most cases.
         */
        final ParameterList block = parameters.parameters;
        final KernelJAI mask1 = (KernelJAI) block.getObjectParameter("Mask1");
        final KernelJAI mask2 = (KernelJAI) block.getObjectParameter("Mask2");
        final double size = (mask1.getWidth() + mask1.getHeight() +
                             mask2.getWidth() + mask2.getHeight()) / 4.0;
        double factor = getNormalizationFactor(mask1, mask2) / (size-1);
        if (factor>0 && !Double.isInfinite(factor)) {
            range = category.geophysics(true).getRange();
            final double minimum = range.getMinimum();
            final double maximum = range.getMaximum();

            // final ImageLayout layout= new ImageLayout();
            // layout.setColorModel(temp.getColorModel());
            // hints.add(new RenderingHints(JAI.KEY_IMAGE_LAYOUT,layout));


            // error diffusion
            final KernelJAI ditherMask = KernelJAI.ERROR_FILTER_FLOYD_STEINBERG;
            final LookupTableJAI colorMap = ColorCube.BYTE_496;
            // (LookupTableJAI) temp.getProperty("JAI.LookupTable");
            image = ErrorDiffusionDescriptor.create(image, colorMap, ditherMask, hints);
        } else {
            // ordered dither

Examples of javax.media.jai.KernelJAI

Related Classes of javax.media.jai.KernelJAI