Examples of InterpolationNearest

com.lightcrafts.mediax.jai.InterpolationNearest
A class representing nearest-neighbor interpolation. Since nearest-neighbor interpolation is simply pixel copying, and not really interpolation at all, most code that performs nearest-neighbor sampling will want to use special-purpose code. However, this class is provided both as a way to specify such interpolation, with the consumer making use of 'instanceof' to detect the particular class, and as a way to force general Interpolation users to use nearest-neighbor sampling. Note that this interpolator does not actually select the "nearest" pixel, but only uses the truncated integer pixel location (floor). This is an optimization reflecting an assumption about the implementation of the resampler. It is assumed that the conversion of continuous source image coordinates to discrete pixel indices drops the final subtraction of 0.5 for the case of a nearest-neighbor interpolator.
Neighborhoods of sizes 2x1, 1x2, 2x2, 4x1, 1x4, 4x4, Nx1 and 1xN, that is, all the interpolate() methods defined in the Interpolation class, are supported in the interest of simplifying code that handles a number of types of interpolation. In each case, the central sample is returned and the rest are ignored.
The class is marked 'final' so that it may be more easily inlined.
javax.media.jai.InterpolationNearest
A class representing nearest-neighbor interpolation. Since nearest-neighbor interpolation is simply pixel copying, and not really interpolation at all, most code that performs nearest-neighbor sampling will want to use special-purpose code. However, this class is provided both as a way to specify such interpolation, with the consumer making use of 'instanceof' to detect the particular class, and as a way to force general Interpolation users to use nearest-neighbor sampling. Note that this interpolator does not actually select the "nearest" pixel, but only uses the truncated integer pixel location (floor). This is an optimization reflecting an assumption about the implementation of the resampler. It is assumed that the conversion of continuous source image coordinates to discrete pixel indices drops the final subtraction of 0.5 for the case of a nearest-neighbor interpolator.
Neighborhoods of sizes 2x1, 1x2, 2x2, 4x1, 1x4, 4x4, Nx1 and 1xN, that is, all the interpolate() methods defined in the Interpolation class, are supported in the interest of simplifying code that handles a number of types of interpolation. In each case, the central sample is returned and the rest are ignored.
The class is marked 'final' so that it may be more easily inlined.

Examples of javax.media.jai.InterpolationNearest

    public void testCoverageWithNearestInterp() throws MismatchedDimensionException,
            TransformException {
        // Execution of the RasterAsPointCollectionProcess setting hemisphere, scaleFactor and nearest interpolation
        boolean hemisphere = true;
        float scaleFactor = 2.0f;
        Interpolation interp = new InterpolationNearest();
        SimpleFeatureCollection collection = process.execute(coverage, null, scaleFactor, interp,
                hemisphere);
        // Check if the points are exactly as the number of pixel number
        Assert.assertEquals((int) (pixelNumber * scaleFactor * scaleFactor), collection.size());
        // Check if each Point Attribute contains the same values of the Input coverage

View Full Code Here

Examples of javax.media.jai.InterpolationNearest

    public void testCoverageWithTargetCRS() throws MismatchedDimensionException,
            TransformException, FactoryException {
        // Execution of the RasterAsPointCollectionProcess setting hemisphere, scaleFactor, nearest interpolation and targetCRS
        boolean hemisphere = true;
        float scaleFactor = 2.0f;
        Interpolation interp = new InterpolationNearest();
        // Selection of the Lambert Conformal Conic CRS
        String wkt = "PROJCS[\"Lambert_Conformal_Conic\","
                + "GEOGCS[\"GCS_unknown\",DATUM[\"D_unknown\","
                + "SPHEROID[\"Sphere\",6367470,0]],PRIMEM[\"Greenwich\",0],"
                + "UNIT[\"Degree\",0.017453292519943295]],"

View Full Code Here

Examples of javax.media.jai.InterpolationNearest

    public void testCoverageDifferentCRS() throws MismatchedDimensionException, TransformException,
            FactoryException {
        // Execution of the RasterAsPointCollectionProcess setting hemisphere, scaleFactor, nearest interpolation and targetCRS
        boolean hemisphere = true;
        float scaleFactor = 2.0f;
        Interpolation interp = new InterpolationNearest();
        // Selection of the Lambert Conformal Conic CRS
        String wkt = "PROJCS[\"Lambert_Conformal_Conic\","
                + "GEOGCS[\"GCS_unknown\",DATUM[\"D_unknown\","
                + "SPHEROID[\"Sphere\",6367470,0]],PRIMEM[\"Greenwich\",0],"
                + "UNIT[\"Degree\",0.017453292519943295]],"

View Full Code Here

Examples of javax.media.jai.InterpolationNearest


            // keep into account translation factors to place this tile
            final AffineTransform translationTransform = tempRaster2Model;
            translationTransform.preConcatenate((AffineTransform) worldToGrid);


            final InterpolationNearest nearest = new InterpolationNearest();
            // paranoiac check to avoid that JAI freaks out when computing its
            // internal layouT on images that are too small
            Rectangle2D finalLayout = ImageUtilities.layoutHelper(raster,
                    (float) translationTransform.getScaleX(),
                    (float) translationTransform.getScaleY(),

View Full Code Here

Examples of javax.media.jai.InterpolationNearest

          param =  CoverageToolsConstants.FILTERED_SUBSAMPLE_FACTORY.getParameters();
          param.parameter("source").setValue(gc);
          param.parameter("scaleX").setValue(new Integer((int) scaleFactor));
          param.parameter("scaleY").setValue(new Integer((int) scaleFactor));
          param.parameter("qsFilterArray").setValue(new float[] { 0.5F, 1.0F / 3.0F, 0.0F,-1.0F / 12.0F });
          param.parameter("Interpolation").setValue(new InterpolationNearest());
          gc = (GridCoverage2D) CoverageToolsConstants.FILTERED_SUBSAMPLE_FACTORY.doOperation(param, new Hints());
        } else if (scaleAlgorithm.equalsIgnoreCase("bil")) {
          param = processor.getOperation("Scale").getParameters();
          param.parameter("Source").setValue(gc);
          param.parameter("xScale").setValue(

View Full Code Here

Examples of javax.media.jai.InterpolationNearest

        ParameterBlock pb = new ParameterBlock();
        pb.addSource(image);
        pb.add(0.0F);
        pb.add(0.0F);
        pb.add(t_angle);
        pb.add(new InterpolationNearest());
        return JAI.create("Rotate", pb, null);
    }

View Full Code Here

0 1 2 3

TOP

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.