javax.media.jai.Warp Java Examples

public WarpOpImage(
    final RenderedImage source,
    final ImageLayout layout,
    final Map<?, ?> configuration,
    final boolean cobbleSources,
    final BorderExtender extender,
    final Interpolation interp,
    final Warp warp,
    final double[] backgroundValues,
    final ROI roi,
    final Range noData) {
  super(
      source,
      layout,
      configuration,
      cobbleSources,
      extender,
      interp,
      warp,
      backgroundValues,
      roi,
      noData);
}
 

/**
 * Creates a new TestWarp object.
 */
public TestWarp (String path)
{
    srcImage = JAI.create("fileload", new ParameterBlock().add(path), null);
    //        srcImage = PictureLoader.loadImages(new File(path), null)
    //                                .get(1);
    //        srcImage = buildPattern(20, 10, 50, 50);
    dimension = new Dimension(srcImage.getWidth(), srcImage.getHeight());
    setPreferredSize(dimension);

    //        float[]        xCoeffs = new float[] { 0f, 1.25f, 0.04f };
    //        float[]        yCoeffs = new float[] { 0f, -0.02f, 1.5f };
    //        Warp           warp = new WarpAffine(xCoeffs, yCoeffs);
    //
    int            xStep = 500;
    int            xNumCells = 2;
    int            yStep = 500;
    int            yNumCells = 1;
    float[]        warpPositions = new float[] {
                                       -100f, 0f, 500f, 100f, 1000f, 0f, // top line
    0f, 500f, 500f, 500f, 1000f, 500f
                                   }; // bot line
    Warp           warp = new WarpGrid(
        0,
        xStep,
        xNumCells,
        0,
        yStep,
        yNumCells,
        warpPositions);
    ParameterBlock pb = new ParameterBlock();
    pb.addSource(invert(srcImage));
    pb.add(warp);
    pb.add(new InterpolationBilinear());
    dstImage = invert(JAI.create("warp", pb));
    ((PlanarImage) dstImage).getTiles();
}
 

/**
 * Creates a new instance of warp operator according to the warp object and interpolation method.
 *
 * @param paramBlock The warp and interpolation objects.
 */
@Override
public RenderedImage create(final ParameterBlock paramBlock, final RenderingHints renderHints) {
  final Interpolation interp = (Interpolation) paramBlock.getObjectParameter(1);
  if ((interp instanceof InterpolationNearest)
      || (interp instanceof javax.media.jai.InterpolationNearest)) {
    // Get ImageLayout from renderHints if any.
    final ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);

    RenderedImage source = paramBlock.getRenderedSource(0);
    final Warp warp = (Warp) paramBlock.getObjectParameter(0);
    final double[] backgroundValues = (double[]) paramBlock.getObjectParameter(2);

    ROI roi = null;
    final Object roi_ = paramBlock.getObjectParameter(3);
    if (roi_ instanceof ROI) {
      roi = (ROI) roi_;
      final PlanarImage temp = PlanarImage.wrapRenderedImage(source);
      temp.setProperty("ROI", roi);
      source = temp;
    }
    Range noData = (Range) paramBlock.getObjectParameter(4);
    noData = RangeFactory.convert(noData, source.getSampleModel().getDataType());
    return new WarpNearestOpImage(
        source,
        renderHints,
        layout,
        warp,
        interp,
        roi,
        noData,
        backgroundValues);
  }
  return super.create(paramBlock, renderHints);
}
 

/**
 * Constructs a WarpNearestOpImage.
 *
 * @param source The source image.
 * @param config RenderingHints used in calculations.
 * @param layout The destination image layout.
 * @param warp An object defining the warp algorithm.
 * @param interp An object describing the interpolation method.
 * @param roi input ROI object used.
 * @param noData NoData Range object used for checking if NoData are present.
 */
public WarpNearestOpImage(
    final RenderedImage source,
    final Map<?, ?> config,
    final ImageLayout layout,
    final Warp warp,
    final Interpolation interp,
    final ROI sourceROI,
    final Range noData,
    final double[] bkg) {
  super(
      source,
      layout,
      config,
      false,
      null, // extender not needed in
      // nearest-neighbor
      // interpolation
      interp,
      warp,
      bkg,
      sourceROI,
      noData);

  /*
   * If the source has IndexColorModel, override the default setting in OpImage. The dest shall
   * have exactly the same SampleModel and ColorModel as the source. Note, in this case, the
   * source should have an integral data type.
   */
  final ColorModel srcColorModel = source.getColorModel();
  if (srcColorModel instanceof IndexColorModel) {
    sampleModel = source.getSampleModel().createCompatibleSampleModel(tileWidth, tileHeight);
    colorModel = srcColorModel;
  }

  /*
   * Selection of a destinationNoData value for each datatype
   */
  final SampleModel sm = source.getSampleModel();
  // Source image data Type
  final int srcDataType = sm.getDataType();

  // Creation of a lookuptable containing the values to use for no data
  if ((srcDataType == DataBuffer.TYPE_BYTE) && hasNoData) {
    final int numBands = getNumBands();
    byteLookupTable = new byte[numBands][256];
    for (int b = 0; b < numBands; b++) {
      for (int i = 0; i < byteLookupTable[0].length; i++) {
        final byte value = (byte) i;
        if (noDataRange.contains(value)) {
          byteLookupTable[b][i] = (byte) backgroundValues[b];
        } else {
          byteLookupTable[b][i] = value;
        }
      }
    }
  }
}