java.awt.image.Raster#getSampleDouble()源码实例Demo

下面列出了java.awt.image.Raster#getSampleDouble() 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： orbit-image-analysis 文件： Calibration.java

public List<double[]> getPairs(BufferedImage bi1, BufferedImage bi2, int u, int v,  int s, int n) throws IOException {
    List<double[]> pairList = new ArrayList<>(bi1.getWidth()*bi1.getHeight());
    Raster r1 = bi1.getRaster().createTranslatedChild(0,0);
    Raster r2 = bi2.getRaster().createTranslatedChild(0,0);
    if (r1.getNumBands()>1) throw new IllegalArgumentException("only 1-banded rasters allowed here");
    if (r2.getNumBands()>1) throw new IllegalArgumentException("only 1-banded rasters allowed here");
    SimpleRegression reg = new SimpleRegression(true);
    int minX = u<0?u*-1:0;
    int minY = v<0?v*-1:0;
    int maxX = u>0?bi1.getWidth()-u: bi1.getWidth();
    int maxY = v>0?bi1.getHeight()-v: bi1.getHeight();
    for (int x=minX; x<maxX; x++) {
        for (int y=minY; y<maxY; y++) {
            double d1 = r1.getSampleDouble(x+u,y+v,0);
            if (d1> intensityThreshold) {
                double d2 = r2.getSampleDouble(x, y, 0);
                double[] pair = new double[]{d2,d1};
                pairList.add(pair);
            }
        }
    }

    return pairList;
}

源代码2 项目： orbit-image-analysis 文件： Calibration.java

public double getSlope(BufferedImage bi1, BufferedImage bi2, int u, int v,  int s, int n) throws IOException {
   
    Raster r1 = bi1.getRaster().createTranslatedChild(0,0);
    Raster r2 = bi2.getRaster().createTranslatedChild(0,0);
    if (r1.getNumBands()>1) throw new IllegalArgumentException("only 1-banded rasters allowed here");
    if (r2.getNumBands()>1) throw new IllegalArgumentException("only 1-banded rasters allowed here");
    SimpleRegression reg = new SimpleRegression(true);
    int minX = u<0?u*-1:0;
    int minY = v<0?v*-1:0;
    int maxX = u>0?bi1.getWidth()-u: bi1.getWidth();
    int maxY = v>0?bi1.getHeight()-v: bi1.getHeight();
    for (int x=minX; x<maxX; x++) {
         for (int y=minY; y<maxY; y++) {
             double d1 = r1.getSampleDouble(x+u,y+v,0);
             if (d1> intensityThreshold) {
                 double d2 = r2.getSampleDouble(x, y, 0);
                 reg.addData(d2, d1);
             }
         }
     }

    double slope = reg.getSlope();
    double intercept = reg.getIntercept();
    logger.info("i,j: "+s+","+n+": "+ "slope: "+slope+" ; intercept: "+intercept);
    return slope;
}

源代码3 项目： snap-desktop 文件： CsvExporter.java

static double getValue(RasterDataNode raster, int pixelX, int pixelY, int currentLevel) {
    final RenderedImage image = raster.getGeophysicalImage().getImage(currentLevel);
    final Rectangle pixelRect = new Rectangle(pixelX, pixelY, 1, 1);
    final Raster data = image.getData(pixelRect);
    final MultiLevelImage validMaskImage = raster.getValidMaskImage();
    Raster validMaskData = null;
    if (validMaskImage != null) {
        final RenderedImage validMask = validMaskImage.getImage(currentLevel);
        validMaskData = validMask.getData(pixelRect);
    }
    final double value;
    if (validMaskData == null || validMaskData.getSample(pixelX, pixelY, 0) > 0) {
        value = data.getSampleDouble(pixelX, pixelY, 0);
    } else {
        value = Double.NaN;
    }
    return value;
}

源代码4 项目： mrgeo 文件： MaskComposite.java

@Override
  public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
  {
    int minX = dstOut.getMinX();
    int minY = dstOut.getMinY();
    int maxX = minX + dstOut.getWidth();
    int maxY = minY + dstOut.getHeight();

    for (int y = minY; y < maxY; y++)
    {
      for (int x = minX; x < maxX; x++)
      {
        double srcValue = src.getSampleDouble(x, y, 0);
        // If the source value is set to the srcMaskedValue, then write out
        // the maskedValue. Otherwise, write out the unmaskedValue.
        if (((srcMaskedValue - EPSILON) <= srcValue) && (srcValue <= (srcMaskedValue + EPSILON)))
        {
//            dstOut.setSample(x, y, 0, maskedValue);
          dstOut.setSample(x, y, 0, maskedValue);
        }
        else
        {
          dstOut.setSample(x, y, 0, unmaskedValue);
        }
      }
    }
  }

源代码5 项目： mrgeo 文件： AdditiveCompositeDouble.java

@Override
public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
{
  int minX = dstOut.getMinX();
  int minY = dstOut.getMinY();
  int maxX = minX + dstOut.getWidth();
  int maxY = minY + dstOut.getHeight();

  //log.debug("minX,minY,maxX,maxY: " + minX + "," + minY + "," + maxX + "," + maxY);
  for (int y = minY; y < maxY; y++)
  {
    for (int x = minX; x < maxX; x++)
    {
      double d = dstIn.getSampleDouble(x, y, 0);
      if (isNodataNaN)
      {
        if (Double.isNaN(d))
        {
          d = 0;
        }
      }
      else
      {
        if (FloatUtils.isEqual(d, nodata))
        {
          d = 0;
        }
      }
      double sample = (src.getSampleDouble(x, y, 0) * weight) + d;

      dstOut.setSample(x, y, 0, sample);
    }
  }
}

源代码6 项目： sis 文件： BufferedGridCoverageTest.java

/**
 * assert that the sample values in the given coverage are equal to the expected values.
 */
private static void assertSamplesEqual(final GridCoverage coverage, final double[][] expected) {
    final Raster raster = coverage.render(null).getData();
    for (int y=0; y<expected.length; y++) {
        for (int x=0; x<expected[y].length; x++) {
            double value = raster.getSampleDouble(x, y, 0);
            Assert.assertEquals(expected[y][x], value, STRICT);
        }
    }
}

源代码7 项目： mrgeo 文件： GaussianComposite.java

@Override
public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
{
  int minX = dstOut.getMinX();
  int minY = dstOut.getMinY();
  int maxX = minX + dstOut.getWidth();
  int maxY = minY + dstOut.getHeight();

  //System.out.println(minX + ", " + minY + " - " + maxX + ", " + maxY);
  // calculate the area of the ellipse
  double area = Math.PI * (major / 2.0) * (minor / 2.0);

  // the final pixel multiplier, to be combined with the gaussian
  double multiplier = weight / area;

  for (int y = minY; y < maxY; y++)
  {
    for (int x = minX; x < maxX; x++)
    {
      double d = dstIn.getSampleDouble(x, y, 0);
      double s = src.getSampleDouble(x, y, 0);

      double sample;

      if (isNodataNaN)
      {
        if (Double.isNaN(s))
        {
          sample = d;
        }
        else
        {
          // do the gaussian...
          sample = calculateGaussian(s, x - dstIn.getSampleModelTranslateX(),
              y - dstIn.getSampleModelTranslateY(), multiplier);
        }
      }
      else
      {
        if (FloatUtils.isEqual(s, nodata))
        {
          sample = d;
        }
        else
        {
          // do the gaussian...
          sample = calculateGaussian(s, x - dstIn.getSampleModelTranslateX(),
              y - dstIn.getSampleModelTranslateY(), multiplier);
        }
      }

      dstOut.setSample(x, y, 0, sample);
    }
  }
}

源代码8 项目： mrgeo 文件： MinCompositeDouble.java

@Override
public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
{
  int minX = dstOut.getMinX();
  int minY = dstOut.getMinY();
  int maxX = minX + dstOut.getWidth();
  int maxY = minY + dstOut.getHeight();

  //log.debug("minX,minY,maxX,maxY: " + minX + "," + minY + "," + maxX + "," + maxY);
  for (int y = minY; y < maxY; y++)
  {
    for (int x = minX; x < maxX; x++)
    {
      double d = dstIn.getSampleDouble(x, y, 0);
      double s = src.getSampleDouble(x, y, 0) * weight;

      double sample;

      if (isNodataNaN)
      {
        if (Double.isNaN(d))
        {
          sample = s;
        }
        else if (Double.isNaN(s))
        {
          sample = d;
        }
        else if (s < d)
        {
          sample = s;
        }
        else
        {
          sample = d;
        }
      }
      else
      {
        if (FloatUtils.isEqual(d, nodata))
        {
          sample = s;
        }
        else if (FloatUtils.isEqual(s, nodata))
        {
          sample = d;
        }
        else if (s < d)
        {
          sample = s;
        }
        else
        {
          sample = d;
        }
      }

      dstOut.setSample(x, y, 0, sample);
    }
  }
}

源代码9 项目： mrgeo 文件： MaxCompositeDouble.java

@Override
public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
{
  int minX = dstOut.getMinX();
  int minY = dstOut.getMinY();
  int maxX = minX + dstOut.getWidth();
  int maxY = minY + dstOut.getHeight();

  //log.debug("minX,minY,maxX,maxY: " + minX + "," + minY + "," + maxX + "," + maxY);
  for (int y = minY; y < maxY; y++)
  {
    for (int x = minX; x < maxX; x++)
    {
      double d = dstIn.getSampleDouble(x, y, 0);
      double s = src.getSampleDouble(x, y, 0) * weight;

      double sample;

      if (isNodataNaN)
      {
        if (Double.isNaN(d))
        {
          sample = s;
        }
        else if (Double.isNaN(s))
        {
          sample = d;
        }
        else if (s > d)
        {
          sample = s;
        }
        else
        {
          sample = d;
        }
      }
      else
      {
        if (FloatUtils.isEqual(d, nodata))
        {
          sample = s;
        }
        else if (FloatUtils.isEqual(s, nodata))
        {
          sample = d;
        }
        else if (s > d)
        {
          sample = s;
        }
        else
        {
          sample = d;
        }
      }

      dstOut.setSample(x, y, 0, sample);
    }
  }
}