Examples of Gray8Image

jjil.core.Gray8Image
Gray8Image is the image type used to store a signed 8-bit image. Note that Java limitations (no unsigned byte) make it necessary to treat alll 8-bit images as signed. @author webb
net.sourceforge.jiu.data.Gray8Image
Interface for grayscale images using integer samples that are eight bits large. Valid sample values must lie in the interval 0 to 255 (including both of those values). Like all grayscale images, implementations of this class are supposed to have one channel only. Simply merges the two interfaces GrayIntegerImage and ByteChannelImage without adding new methods. @author Marco Schmidt @see ByteChannelImage @see GrayIntegerImage

Examples of jjil.core.Gray8Image

              null,
              null);
        }
        RgbImage rgb = (RgbImage) image;
        int[] rgbData = rgb.getData();
        Gray8Image gray = new Gray8Image(image.getWidth(), image.getHeight());
        byte[] grayData = gray.getData();
        for (int i=0; i<image.getWidth() * image.getHeight(); i++) {
            /* get individual r, g, and b values, unmasking them from the
             * ARGB word. The r, g, and b values are signed values 
             * from -128 to 127.
             */

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Examples of net.sourceforge.jiu.data.Gray8Image

    MissingParameterException,
    WrongParameterException
  {
    PixelImage in = getInputImage();
    prepare(in);
    Gray8Image out = (Gray8Image)getOutputImage();
    if (in instanceof BilevelImage)
    {
      process((BilevelImage)in, out);
    }
  }

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Examples of net.sourceforge.jiu.data.Gray8Image

  private void process(Paletted8Image in) throws
    MissingParameterException,
    WrongParameterException
  {
    PixelImage image = getOutputImage();
    Gray8Image out = null;
    if (image == null)
    {
      out = new MemoryGray8Image(in.getWidth(), in.getHeight());
    }
    else
    {
      if (!(image instanceof Gray8Image))
      {
        throw new WrongParameterException("Specified output image must be of type Gray8Image for input image of type Paletted8Image.");
      }
      out = (Gray8Image)image;
      ensureImagesHaveSameResolution();
    }
    Palette palette = in.getPalette();
    int[] lut = new int[palette.getNumEntries()];
    for (int i = 0; i < lut.length; i++)
    {
      int red = palette.getSample(RGBIndex.INDEX_RED, i);
      int green = palette.getSample(RGBIndex.INDEX_GREEN, i);
      int blue = palette.getSample(RGBIndex.INDEX_BLUE, i);
      lut[i] = (int)(red * redWeight + green * greenWeight + blue * blueWeight);
    }
    final int WIDTH = in.getWidth();
    final int HEIGHT = in.getHeight();
    for (int y = 0; y < HEIGHT; y++)
    {
      for (int x = 0; x < WIDTH; x++)
      {
        try
        {
          out.putSample(0, x, y, lut[in.getSample(0, x, y)]);
        }
        catch (ArrayIndexOutOfBoundsException aioobe)
        {
        }
      }

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Examples of net.sourceforge.jiu.data.Gray8Image

    outputImage = out;
  }


  private void createGray8FromGray16(Gray16Image in)
  {
    Gray8Image out = new MemoryGray8Image(in.getWidth(), in.getHeight());
    for (int y = 0; y < in.getHeight(); y++)
    {
      for (int x = 0; x < in.getWidth(); x++)
      {
        out.putSample(0, x, y, in.getSample(0, x, y) & 0xff);
      }
      setProgress(y, in.getHeight());
    }
    outputImage = out;
  }

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Examples of net.sourceforge.jiu.data.Gray8Image

      if (palette.isGray())
      {
        type = TYPE_GRAY8;
        if (doConvert)
        {
          Gray8Image out = new MemoryGray8Image(in.getWidth(), in.getHeight());
          createGray8FromPaletted8(in, out);
        }
      }
    }
    else

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Examples of net.sourceforge.jiu.data.Gray8Image


  private IntegerImage createImage(int width, int height)
  {
    if (monochrome)
    {
      Gray8Image image = new MemoryGray8Image(width, height);
      int offset = 0;
      for (int y = 0; y < height; y++)
      {
        for (int x = 0; x < width; x++)
        {
          image.putByteSample(0, x, y, data[0][offset++]);
        }
      }
      return image;
    }
    else
    if (performColorConversion)
    {
      RGB24Image image = new MemoryRGB24Image(width, height);
      int offset = 0;
      for (int y = 0; y < height; y++)
      {
        for (int x = 0; x < width; x++)
        {
          image.putByteSample(RGB24Image.INDEX_RED, x, y, data[0][offset]);
          image.putByteSample(RGB24Image.INDEX_GREEN, x, y, data[1][offset]);
          image.putByteSample(RGB24Image.INDEX_BLUE, x, y, data[2][offset]);
          offset++;
        }
      }
      return image;
    }

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Examples of net.sourceforge.jiu.data.Gray8Image

      }
    }
    else
    if (image instanceof Gray8Image)
    {
      Gray8Image grayImage = (Gray8Image)image;
      grayImage.getByteSamples(0, getBoundsX1(), y, getBoundsWidth(), 1, row, offs);
    }
    else
    if (image instanceof Paletted8Image)
    {
      Paletted8Image palImage = (Paletted8Image)image;

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Examples of net.sourceforge.jiu.data.Gray8Image

        }
        break;
      }
      case(2):
      {
        Gray8Image grayImage = (Gray8Image)image;
        ArrayConverter.convertPacked2BitIntensityTo8Bit(buffer, 0, dest, 0, numPackedBytes);
        while (x <= x2)
        {
          if (x >= x1)
          {
            grayImage.putByteSample(x - x1, y, dest[offset]);
          }
          x += incr;
          offset++;
        }
        break;
      }
      case(4):
      {
        Gray8Image grayImage = (Gray8Image)image;
        ArrayConverter.convertPacked4BitIntensityTo8Bit(buffer, 0, dest, 0, numPackedBytes);
        while (x <= x2)
        {
          if (x >= x1)
          {
            grayImage.putByteSample(x - x1, y, dest[offset]);
          }
          x += incr;
          offset++;
        }
        break;
      }
      case(8):
      {
        Gray8Image grayImage = (Gray8Image)image;
        while (x <= x2)
        {
          if (x >= x1)
          {
            grayImage.putSample(x - x1, y, buffer[offset]);
          }
          x += incr;
          offset++;
        }
        break;
      }
      case(16):
      {
        Gray16Image grayImage = (Gray16Image)image;
        while (x <= x2)
        {
          if (x >= x1)
          {
            int sample = (buffer[offset] & 0xff) << 8;
            sample |= (buffer[offset + 1] & 0xff);
            grayImage.putSample(x, y, sample);
          }
          x += incr;
          offset += 2;
        }
        break;

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Examples of net.sourceforge.jiu.data.Gray8Image

    int offset = 0;
    switch(precision)
    {
      case(8):
      {
        Gray8Image grayImage = (Gray8Image)image;
        while (x <= x2)
        {
          if (x >= x1)
          {
            grayImage.putSample(x - x1, y, buffer[offset]);
            // alpha
          }
          x += incr;
          offset += 2;
        }
        break;
      }
      case(16):
      {
        Gray16Image grayImage = (Gray16Image)image;
        while (x <= x2)
        {
          if (x >= x1)
          {
            int sample = (buffer[offset] & 0xff) << 8;
            sample |= (buffer[offset + 1] & 0xff);
            grayImage.putSample(x, y, sample);
            // store alpha
          }
          x += incr;
          offset += 4;
        }

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Examples of net.sourceforge.jiu.data.Gray8Image

        bilevelImage.putPackedBytes(0, y, getBoundsWidth(), buffer, x1 / 8, x1 % 8);
        break;
      }
      case(2):
      {
        Gray8Image grayImage = (Gray8Image)image;
        byte[] dest = new byte[width + 3];
        ArrayConverter.convertPacked2BitIntensityTo8Bit(buffer, 0, dest, 0, buffer.length);
        grayImage.putByteSamples(0, 0, y, getBoundsWidth(), 1, dest, getBoundsX1());
        break;
      }
      case(4):
      {
        Gray8Image grayImage = (Gray8Image)image;
        byte[] dest = new byte[width + 1];
        ArrayConverter.convertPacked4BitIntensityTo8Bit(buffer, 0, dest, 0, buffer.length);
        grayImage.putByteSamples(0, 0, y, getBoundsWidth(), 1, dest, getBoundsX1());
        break;
      }
      case(8):
      {
        Gray8Image grayImage = (Gray8Image)image;
        int offset = getBoundsX1();
        int x = 0;
        int k = getBoundsWidth();
        while (k > 0)
        {
          grayImage.putSample(0, x++, y, buffer[offset++]);
          k--;
        }
        break;
      }
      case(16):
      {
        Gray16Image grayImage = (Gray16Image)image;
        int offset = getBoundsX1();
        int x = 0;
        int k = getBoundsWidth();
        while (k > 0)
        {
          int sample = (buffer[offset++] & 0xff) << 8;
          sample |= (buffer[offset++] & 0xff);
          grayImage.putSample(x++, y, sample);
          k--;
        }
        break;
      }
    }

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