Java Code Examples for java.awt.image.Raster#getSample()

The following examples show how to use java.awt.image.Raster#getSample() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: ShortHistogramTest.java From jdk8u-dev-jdk with GNU General Public License v2.0

6 votes

private IIOMetadataNode gethISTNode(BufferedImage bi) {
    IndexColorModel icm = (IndexColorModel)bi.getColorModel();
    int mapSize = icm.getMapSize();

    int[] hist = new int[mapSize];
    Arrays.fill(hist, 0);

    Raster r = bi.getData();
    for (int y = 0; y < bi.getHeight(); y++) {
        for (int x = 0; x < bi.getWidth(); x++) {
            int s = r.getSample(x, y, 0);
            hist[s] ++;
        }
    }

    IIOMetadataNode hIST = new IIOMetadataNode("hIST");
    for (int i = 0; i < hist.length; i++) {
        IIOMetadataNode n = new IIOMetadataNode("hISTEntry");
        n.setAttribute("index", "" + i);
        n.setAttribute("value", "" + hist[i]);
        hIST.appendChild(n);
    }

    return hIST;
}

Example 2

Source File: ShortHistogramTest.java From jdk8u_jdk with GNU General Public License v2.0

6 votes

private IIOMetadataNode gethISTNode(BufferedImage bi) {
    IndexColorModel icm = (IndexColorModel)bi.getColorModel();
    int mapSize = icm.getMapSize();

    int[] hist = new int[mapSize];
    Arrays.fill(hist, 0);

    Raster r = bi.getData();
    for (int y = 0; y < bi.getHeight(); y++) {
        for (int x = 0; x < bi.getWidth(); x++) {
            int s = r.getSample(x, y, 0);
            hist[s] ++;
        }
    }

    IIOMetadataNode hIST = new IIOMetadataNode("hIST");
    for (int i = 0; i < hist.length; i++) {
        IIOMetadataNode n = new IIOMetadataNode("hISTEntry");
        n.setAttribute("index", "" + i);
        n.setAttribute("value", "" + hist[i]);
        hIST.appendChild(n);
    }

    return hIST;
}

Example 3

Source File: CsvExporter.java From snap-desktop with GNU General Public License v3.0

6 votes

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;
}

Example 4

Source File: ImageLoader.java From DataVec with Apache License 2.0

6 votes

protected int[][] toIntArrayArray(BufferedImage image) {
    int w = image.getWidth(), h = image.getHeight();
    int[][] ret = new int[h][w];
    if (image.getRaster().getNumDataElements() == 1) {
        Raster raster = image.getRaster();
        for (int i = 0; i < h; i++) {
            for (int j = 0; j < w; j++) {
                ret[i][j] = raster.getSample(j, i, 0);
            }
        }
    } else {
        for (int i = 0; i < h; i++) {
            for (int j = 0; j < w; j++) {
                ret[i][j] = image.getRGB(j, i);
            }
        }
    }
    return ret;
}

Example 5

Source File: ShortHistogramTest.java From openjdk-jdk9 with GNU General Public License v2.0

6 votes

private IIOMetadataNode gethISTNode(BufferedImage bi) {
    IndexColorModel icm = (IndexColorModel)bi.getColorModel();
    int mapSize = icm.getMapSize();

    int[] hist = new int[mapSize];
    Arrays.fill(hist, 0);

    Raster r = bi.getData();
    for (int y = 0; y < bi.getHeight(); y++) {
        for (int x = 0; x < bi.getWidth(); x++) {
            int s = r.getSample(x, y, 0);
            hist[s] ++;
        }
    }

    IIOMetadataNode hIST = new IIOMetadataNode("hIST");
    for (int i = 0; i < hist.length; i++) {
        IIOMetadataNode n = new IIOMetadataNode("hISTEntry");
        n.setAttribute("index", "" + i);
        n.setAttribute("value", "" + hist[i]);
        hIST.appendChild(n);
    }

    return hIST;
}

Example 6

Source File: ShortHistogramTest.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

private IIOMetadataNode gethISTNode(BufferedImage bi) {
    IndexColorModel icm = (IndexColorModel)bi.getColorModel();
    int mapSize = icm.getMapSize();

    int[] hist = new int[mapSize];
    Arrays.fill(hist, 0);

    Raster r = bi.getData();
    for (int y = 0; y < bi.getHeight(); y++) {
        for (int x = 0; x < bi.getWidth(); x++) {
            int s = r.getSample(x, y, 0);
            hist[s] ++;
        }
    }

    IIOMetadataNode hIST = new IIOMetadataNode("hIST");
    for (int i = 0; i < hist.length; i++) {
        IIOMetadataNode n = new IIOMetadataNode("hISTEntry");
        n.setAttribute("index", "" + i);
        n.setAttribute("value", "" + hist[i]);
        hIST.appendChild(n);
    }

    return hIST;
}

Example 7

Source File: DLSegment.java From orbit-image-analysis with GNU General Public License v3.0

6 votes

private static BufferedImage combineMasks(BufferedImage m1, BufferedImage m2, int dx, int dy) {
    BufferedImage combined = new BufferedImage(m1.getWidth(),m1.getHeight(),m1.getType());
    combined.getGraphics().drawImage(m1,0,0,null);
    int fg = Color.white.getRGB();
    Raster r2 = m2.getRaster();
    int minx = -dx<0?0:-dx;
    int miny = -dy<0?0:-dy;
    int maxx = m2.getWidth()-dx<m2.getWidth()?m2.getWidth()-dx:m2.getWidth();
    int maxy = m2.getHeight()-dy<m2.getHeight()?m2.getHeight()-dy:m2.getHeight();
    
    for (int x=minx; x<maxx; x++)
        for (int y=miny; y<maxy; y++) {
            if (r2.getSample(x,y,0)>0) {
                combined.setRGB(x+dx,y+dy,fg);
            }
        }
    return combined;
}

Example 8

Source File: ShortHistogramTest.java From hottub with GNU General Public License v2.0

6 votes

private IIOMetadataNode gethISTNode(BufferedImage bi) {
    IndexColorModel icm = (IndexColorModel)bi.getColorModel();
    int mapSize = icm.getMapSize();

    int[] hist = new int[mapSize];
    Arrays.fill(hist, 0);

    Raster r = bi.getData();
    for (int y = 0; y < bi.getHeight(); y++) {
        for (int x = 0; x < bi.getWidth(); x++) {
            int s = r.getSample(x, y, 0);
            hist[s] ++;
        }
    }

    IIOMetadataNode hIST = new IIOMetadataNode("hIST");
    for (int i = 0; i < hist.length; i++) {
        IIOMetadataNode n = new IIOMetadataNode("hISTEntry");
        n.setAttribute("index", "" + i);
        n.setAttribute("value", "" + hist[i]);
        hIST.appendChild(n);
    }

    return hIST;
}

Example 9

Source File: ImageLoader.java From deeplearning4j with Apache License 2.0

6 votes

protected int[][] toIntArrayArray(BufferedImage image) {
    int w = image.getWidth(), h = image.getHeight();
    int[][] ret = new int[h][w];
    if (image.getRaster().getNumDataElements() == 1) {
        Raster raster = image.getRaster();
        for (int i = 0; i < h; i++) {
            for (int j = 0; j < w; j++) {
                ret[i][j] = raster.getSample(j, i, 0);
            }
        }
    } else {
        for (int i = 0; i < h; i++) {
            for (int j = 0; j < w; j++) {
                ret[i][j] = image.getRGB(j, i);
            }
        }
    }
    return ret;
}

Example 10

Source File: BMPEncoder.java From jclic with GNU General Public License v2.0

5 votes

/**
 * Encodes and writes raster data as a 24-bit bitmap.
 * @param raster the source raster data
 * @param out the output to which the bitmap will be written
 * @throws java.io.IOException if an error occurs
 */
public static void write24(Raster raster, net.sf.image4j.io.LittleEndianOutputStream out) throws IOException {
  
  int width = raster.getWidth();    
  int height = raster.getHeight();
  
  // calculate bytes per line
  int bytesPerLine = getBytesPerLine24(width);
  
  // write lines
  for (int y = height - 1; y >= 0; y--) {
    
    // write pixel data for each line
    for (int x = 0; x < width; x++) {
      
      // get RGB values for pixel
      int r = raster.getSample(x, y, 0);
      int g = raster.getSample(x, y, 1);
      int b = raster.getSample(x, y, 2);
      
      // write RGB values
      out.writeByte(b);
      out.writeByte(g);
      out.writeByte(r);
    }
    
    // write padding bytes at end of line
    for (int i = width * 3; i < bytesPerLine; i++) {
      out.writeByte(0);
    }
  }
}

Example 11

Source File: ExportMaskPixelsAction.java From snap-desktop with GNU General Public License v3.0

5 votes

private static long getNumMaskPixels(final RenderedImage maskImage, int sceneRasterWidth, int sceneRasterHeight) {
    final int minTileX = maskImage.getMinTileX();
    final int minTileY = maskImage.getMinTileY();

    final int numXTiles = maskImage.getNumXTiles();
    final int numYTiles = maskImage.getNumYTiles();

    final Rectangle imageRect = new Rectangle(0, 0, sceneRasterWidth, sceneRasterHeight);

    long numMaskPixels = 0;
    for (int tileX = minTileX; tileX < minTileX + numXTiles; ++tileX) {
        for (int tileY = minTileY; tileY < minTileY + numYTiles; ++tileY) {
            final Rectangle tileRectangle = new Rectangle(maskImage.getTileGridXOffset() + tileX * maskImage.getTileWidth(),
                                                          maskImage.getTileGridYOffset() + tileY * maskImage.getTileHeight(),
                                                          maskImage.getTileWidth(), maskImage.getTileHeight());

            final Rectangle r = imageRect.intersection(tileRectangle);
            if (!r.isEmpty()) {
                Raster maskTile = maskImage.getTile(tileX, tileY);
                for (int y = r.y; y < r.y + r.height; y++) {
                    for (int x = r.x; x < r.x + r.width; x++) {
                        if (maskTile.getSample(x, y, 0) != 0) {
                            numMaskPixels++;
                        }
                    }
                }
            }
        }
    }
    return numMaskPixels;
}

Example 12

Source File: BMPEncoder.java From jclic with GNU General Public License v2.0

5 votes

/**
 * Encodes and writes raster data as an 8-bit bitmap.
 * @param raster the source raster data
 * @param out the output to which the bitmap will be written
 * @throws java.io.IOException if an error occurs
 */
public static void write8(Raster raster, net.sf.image4j.io.LittleEndianOutputStream out) throws IOException {
  
  int width = raster.getWidth();
  int height = raster.getHeight();
  
  // calculate bytes per line
  int bytesPerLine = getBytesPerLine8(width);
  
  // write lines
  for (int y = height - 1; y >= 0; y--) {
    
    // write raster data for each line
    for (int x = 0; x < width; x++) {
      
      // get color index for pixel
      int index = raster.getSample(x, y, 0);
      
      
      out.writeByte(index);
    }
    
    // write padding bytes at end of line
    for (int i = width; i < bytesPerLine; i++) {
      out.writeByte(0);
    }
    
  }
}

Example 13

Source File: NerveDetectionWorkerMultiCore.java From orbit-image-analysis with GNU General Public License v3.0

5 votes

public List<Shape> detectSegmentations(int minSegmentationSize, PlanarImage sourceImage, Shape roi) {
    logger.trace("getSegmentations (minSegmentation=" + minSegmentationSize + ")");
    if (sourceImage == null) return new ArrayList<Shape>(0);
    short[][] smap = new short[sourceImage.getWidth()][sourceImage.getHeight()];

    for (int x = 0; x < sourceImage.getWidth(); x++)
        for (int y = 0; y < sourceImage.getHeight(); y++)
            smap[x][y] = Short.MAX_VALUE;

    // init
    Point[] tileArr = sourceImage.getTileIndices(null);
    int c;
    for (Point tileNum : tileArr) {
        if (isCancelled()) break;
        final int b = 2;

        Raster raster = sourceImage.getTile(tileNum.x, tileNum.y);
        for (int x = sourceImage.tileXToX(tileNum.x) + b; x < Math.min(sourceImage.tileXToX(tileNum.x) + sourceImage.getTileWidth() - b, sourceImage.getWidth()); x++) {
            for (int y = sourceImage.tileYToY(tileNum.y) + b; y < Math.min(sourceImage.tileYToY(tileNum.y) + sourceImage.getTileHeight() - b, sourceImage.getHeight()); y++) {
                if (fullRoi != null && !(fullRoi.contains(x + roi.getBounds().x, y + roi.getBounds().y))) {
                    continue;
                }

                c = raster.getSample(x, y, 0) < 200 ? 0 : 1; // dark=foreground, white=background (only red channel is taken into account)
                if (c == 0) {  // not background, not assigned
                    smap[x][y] = 1; // 1
                } else {
                    smap[x][y] = 0; // 0
                }
            } //y
        } // x
    } // tileNum


    if (isCancelled()) return null;
    return findPolygons(smap, orderPoints, minSegmentationSize, roi);
}

Example 14

Source File: NerveDetectionWorker.java From orbit-image-analysis with GNU General Public License v3.0

5 votes

public List<Shape> detectSegmentations(int minSegmentationSize, PlanarImage sourceImage) {
    logger.trace("getSegmentations (minSegmentation=" + minSegmentationSize + ")");
    rf.initializeClassColors();
    //if (rf.getNegativeChannel() != null) rf.getNegativeChannel().initializeClassColors();
    if (sourceImage == null) return new ArrayList<Shape>(0);
    short[][] smap = new short[sourceImage.getWidth()][sourceImage.getHeight()];

    for (int x = 0; x < sourceImage.getWidth(); x++)
        for (int y = 0; y < sourceImage.getHeight(); y++)
            smap[x][y] = Short.MAX_VALUE;

    // init
    Point[] tileArr = sourceImage.getTileIndices(null);
    int c;
    for (Point tileNum : tileArr) {
        if (isCancelled()) break;
        final int b = 2;

        Raster raster = sourceImage.getTile(tileNum.x, tileNum.y);
        for (int x = sourceImage.tileXToX(tileNum.x) + b; x < Math.min(sourceImage.tileXToX(tileNum.x) + sourceImage.getTileWidth() - b, sourceImage.getWidth()); x++) {
            for (int y = sourceImage.tileYToY(tileNum.y) + b; y < Math.min(sourceImage.tileYToY(tileNum.y) + sourceImage.getTileHeight() - b, sourceImage.getHeight()); y++) {
                if (fullRoi != null && !(fullRoi.contains(x + roi.getBounds().x, y + roi.getBounds().y))) {
                    continue;
                }

                c = raster.getSample(x, y, 0) < 200 ? 0 : 1; // dark=foreground, white=background (only red channel is taken into account)
                if (c == 0) {  // not background, not assigned
                    smap[x][y] = 1; // 1
                } else {
                    smap[x][y] = 0; // 0
                }
            } //y
        } // x
    } // tileNum


    if (isCancelled()) return null;
    return findPolygons(smap, minSegmentationSize);
}

Example 15

Source File: ImageLoader.java From Canova with Apache License 2.0

5 votes

public int[][] fromFile(File file) throws IOException {
    BufferedImage image = ImageIO.read(file);
    if (height > 0 && width > 0)
        image = toBufferedImage(image.getScaledInstance(height, width, Image.SCALE_SMOOTH));
    Raster raster = image.getData();
    int w = raster.getWidth(), h = raster.getHeight();
    int[][] ret = new int[w][h];
    for (int i = 0; i < w; i++)
        for (int j = 0; j < h; j++)
            ret[i][j] = raster.getSample(i, j, 0);

    return ret;
}

Example 16

Source File: SpectrumTopComponent.java From snap-desktop with GNU General Public License v3.0

5 votes

private boolean isPixelValid(RasterDataNode raster, int pixelX, int pixelY, int level) {
    if (raster.isValidMaskUsed()) {
        PlanarImage image = ImageManager.getInstance().getValidMaskImage(raster, level);
        Raster data = getRasterTile(image, pixelX, pixelY);
        return data.getSample(pixelX, pixelY, 0) != 0;
    } else {
        return true;
    }
}

Example 17

Source File: PixelInfoViewModelUpdater.java From snap-desktop with GNU General Public License v3.0

5 votes

private boolean isPixelValid(RasterDataNode raster, int pixelX, int pixelY, int level) {
    if (raster.isValidMaskUsed()) {
        PlanarImage image = ImageManager.getInstance().getValidMaskImage(raster, level);
        Raster data = getRasterTile(image, pixelX, pixelY);
        return data.getSample(pixelX, pixelY, 0) != 0;
    } else {
        return true;
    }
}

Example 18

Source File: FuzzyImageDifferenceCalculator.java From recheck with GNU Affero General Public License v3.0

5 votes

protected int getAverageBrightness( final BufferedImage img ) {
	final Raster r = img.getData();
	int total = 0;
	for ( int y = 0; y < r.getHeight(); y++ ) {
		for ( int x = 0; x < r.getWidth(); x++ ) {
			total += r.getSample( r.getMinX() + x, r.getMinY() + y, 0 );
		}
	}
	return (int) (total / (r.getWidth() / STABILIZER * (r.getHeight() / STABILIZER)));
}

Example 19

Source File: S3HistogramEqualizerRIF.java From DataHubSystem with GNU Affero General Public License v3.0

4 votes

int getBlue (Raster raster, int x,int y)
{
   return raster.getSample(x, y, 2);
}

Example 20

Source File: S3HistogramEqualizerRIF.java From DataHubSystem with GNU Affero General Public License v3.0

4 votes

int getRed (Raster raster, int x,int y)
{
   return raster.getSample(x, y, 0);
}