Package net.sourceforge.jiu.color.quantization

Class UniformPaletteQuantizer

java.lang.Object
net.sourceforge.jiu.ops.Operation
net.sourceforge.jiu.ops.ImageToImageOperation
net.sourceforge.jiu.color.quantization.UniformPaletteQuantizer
All Implemented Interfaces:
RGBQuantizer, RGBIndex
public class UniformPaletteQuantizer extends ImageToImageOperation implements RGBIndex, RGBQuantizer
A color quantizer that maps to a palette which is equidistantly distributed in the RGB color cube. Equidistantly distributed only within each channel.
Author:
Marco Schmidt

  • Field Details

    • RED_BITS

      private final int RED_BITS

    • RED_LEFT_SHIFT

      private final int RED_LEFT_SHIFT

    • RED_RIGHT_SHIFT

      private final int RED_RIGHT_SHIFT

    • RED_VALUES

      private final int[] RED_VALUES

    • GREEN_BITS

      private final int GREEN_BITS

    • GREEN_LEFT_SHIFT

      private final int GREEN_LEFT_SHIFT

    • GREEN_RIGHT_SHIFT

      private final int GREEN_RIGHT_SHIFT

    • GREEN_VALUES

      private final int[] GREEN_VALUES

    • BLUE_BITS

      private final int BLUE_BITS

    • BLUE_RIGHT_SHIFT

      private final int BLUE_RIGHT_SHIFT

    • BLUE_VALUES

      private final int[] BLUE_VALUES

    • TOTAL_BITS

      private final int TOTAL_BITS

    • PALETTE_RED

      private int[] PALETTE_RED

    • PALETTE_GREEN

      private int[] PALETTE_GREEN

    • PALETTE_BLUE

      private int[] PALETTE_BLUE

  • Constructor Details

    • UniformPaletteQuantizer

      public UniformPaletteQuantizer(int redBits, int greenBits, int blueBits)

  • Method Details

    • createPalette

      public Palette createPalette()
      Description copied from interface: RGBQuantizer
      Return a Palette object with the list of colors to be used in the quantization process. That palette may be fixed or created specifically for a given input image.
      Specified by:
      createPalette in interface RGBQuantizer
      Returns:
      Palette object for destination image

    • map

      public int map(int[] origRgb, int[] quantizedRgb)
      Description copied from interface: RGBQuantizer
      This method maps a triplet of intensity values to its quantized counterpart and returns the palette index of that quantized color. The index values for the two arrays are taken from RGBIndex.
      Specified by:
      map in interface RGBQuantizer
      Parameters:
      origRgb - the three samples red, green and blue for which a good match is searched in the palette
      quantizedRgb - will hold the three samples found to be closest to origRgb after the call to this method
      Returns:
      int index in the palette of the match quantizedRgb

    • mapToIndex

      public final int mapToIndex(int red, int green, int blue)

    • process

      private void process(RGB24Image in, Paletted8Image out)

    • process

      public void process()
      Description copied from class: Operation
      This method does the actual work of the operation. It must be called after all parameters have been given to the operation object.
      Overrides:
      process in class Operation