Java WritableRaster.setSample方法代码示例

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
/**
 * create a quicklook image from the GeoImageReader
 * @param gir the source image
 * @param width the output width
 * @param height the output height
 * @return a BufferedImage representing the quicklook
 */
public static BufferedImage createOverview(GeoImageReader gir, int width, int height,int band){
    int nPass=gir.getHeight()/Constant.GEOIMAGE_TILE_SIZE;
    int xstep=gir.getWidth()/width;
    int ystep=gir.getHeight()/height;
    width=gir.getWidth()/xstep;
    height= gir.getHeight()/ystep;
    BufferedImage out=new BufferedImage(width,height, BufferedImage.TYPE_USHORT_GRAY);
    WritableRaster raster=out.getRaster();
    for(int i=0;i<nPass;i++){
        int[] t=gir.readTile(0, i*Constant.GEOIMAGE_TILE_SIZE, gir.getWidth(), Constant.GEOIMAGE_TILE_SIZE,band);
        for(int x=0;x<width;x++){
            for(int y=i*height/nPass;y<(i+1)*height/nPass;y++){
                raster.setSample(x, y, 0, t[x*xstep*(y-i*height/nPass)*ystep]);
            }
        }
    }
    return out;
}
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
public void output(File paramFile)
{
  BufferedImage localBufferedImage = new BufferedImage(width, height, 10);
  WritableRaster localWritableRaster = localBufferedImage.getRaster();
  
  int i = 0;
  if (i >= height) {
    ImageIO.write(localBufferedImage, "png", paramFile);
  } else {
    for (int j = 0;; j++)
    {
      if (j >= width)
      {
        i++; break;
      }
      localWritableRaster.setSample(j, i, 0, data[(i * height + j)]);
    }
  }
}
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
protected RenderedImage getIndexedImage() {
    IndexColorModel icm = getIndexColorModel();

    BufferedImage dst =
        new BufferedImage(src.getWidth(), src.getHeight(),
                          BufferedImage.TYPE_BYTE_INDEXED, icm);

    WritableRaster wr = dst.getRaster();
    for (int y =0; y < dst.getHeight(); y++) {
        for (int x = 0; x < dst.getWidth(); x++) {
            Color aColor = getSrcColor(x,y);
            wr.setSample(x, y, 0, findColorIndex(root, aColor));
        }
    }

    return dst;
}
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
protected static BufferedImage createIndexedImage(int w, int h,
                                                  IndexColorModel icm)
{
    BufferedImage img = new BufferedImage(w, h,
                                          BufferedImage.TYPE_BYTE_INDEXED,
                                          icm);

    int mapSize = icm.getMapSize();
    int width = w / mapSize;

    WritableRaster wr = img.getRaster();
    for (int i = 0; i < mapSize; i++) {
        for (int y = 0; y < h; y++) {
            for (int x = 0; x < width; x++) {
                wr.setSample(i * width + x, y, 0, i);
            }
        }
    }
    return img;
}
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
public void output(File out, short data[]) throws IOException {
	BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
	WritableRaster r = img.getRaster();

	for (int y = 0; y < height; y++) {
		for (int x = 0; x < width; x++) {
			// System.out.print(" "+x+","+y);
			r.setSample(x, y, 0, data[y * height + x]);
		}
		// System.out.println();
	}

	ImageIO.write(img, "png", out);
}
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
@Ignore
public void output(File out) throws IOException {
	BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
	WritableRaster r = img.getRaster();

	for(int y = 0; y < height; y++) {
		for(int x = 0; x < width; x++) {
			r.setSample(x, y, 0, data[y * height + x]);
		}
	}

	ImageIO.write(img, "png", out);
}
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
@Override
    synchronized public void propertyChange(PropertyChangeEvent evt) {
        if ((aviOutputStream != null && isWriteEnabled())
                && (evt.getPropertyName() == AEFrameChipRenderer.EVENT_NEW_FRAME_AVAILBLE)
                && !chip.getAeViewer().isPaused()) {
            FloatBuffer frame = ((AEFrameChipRenderer)chip.getRenderer()).getPixmap();

            BufferedImage bufferedImage = new BufferedImage(chip.getSizeX(), chip.getSizeY(), BufferedImage.TYPE_3BYTE_BGR);
            WritableRaster raster = bufferedImage.getRaster();
            int sx = chip.getSizeX(), sy = chip.getSizeY();
            for (int y = 0; y < sy; y++) {
                for (int x = 0; x < sx; x++) {
                    int k = renderer.getPixMapIndex(x, y);
//                    bufferedImage.setRGB(x, y, (int) (frame[k] * 1024));
                    int yy = sy - y - 1;
                    int r = (int) (frame.get(k) * 255); // must flip image vertially according to java convention that image starts at upper left
                    int g = (int) (frame.get(k+1) * 255); // must flip image vertially according to java convention that image starts at upper left
                    int b = (int) (frame.get(k+2) * 255); // must flip image vertially according to java convention that image starts at upper left
                    raster.setSample(x, yy, 0, r);
                    raster.setSample(x, yy, 1, g);
                    raster.setSample(x, yy, 2, b);
                }
            }
            try {
                aviOutputStream.writeFrame(bufferedImage);
                int timestamp = renderer.getTimestampFrameEnd();
                writeTimecode(timestamp);
                incrementFramecountAndMaybeCloseOutput();

            } catch (IOException ex) {
                Logger.getLogger(DavisFrameAviWriter.class.getName()).log(Level.SEVERE, null, ex);
            }
        } else if (evt.getPropertyName() == AEInputStream.EVENT_REWIND) {
            doCloseFile();
        }
    }
 

import java.awt.image.WritableRaster; //导入方法依赖的package包/类
/**
 * Reformats bit-discontiguous data into the {@code DataBuffer}
 * of the supplied {@code WritableRaster}.
 */
private static void reformatDiscontiguousData(byte[] buf,
                                              int[] bitsPerSample,
                                              int stride,
                                              int w,
                                              int h,
                                              WritableRaster raster)
    throws IOException {

    // Get SampleModel info.
    SampleModel sm = raster.getSampleModel();
    int numBands = sm.getNumBands();

    // Initialize input stream.
    ByteArrayInputStream is = new ByteArrayInputStream(buf);
    ImageInputStream iis = new MemoryCacheImageInputStream(is);

    // Reformat.
    long iisPosition = 0L;
    int y = raster.getMinY();
    for(int j = 0; j < h; j++, y++) {
        iis.seek(iisPosition);
        int x = raster.getMinX();
        for(int i = 0; i < w; i++, x++) {
            for(int b = 0; b < numBands; b++) {
                long bits = iis.readBits(bitsPerSample[b]);
                raster.setSample(x, y, b, (int)bits);
            }
        }
        iisPosition += stride;
    }
}