java.awt.image.Raster#getSample

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

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);
    }
  }
}

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;
}

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);
    }
    
  }
}

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);
}

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);
}

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;
}

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;
    }
}

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;
    }
}

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)));
}

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);
}

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);
}

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