C# Class ImageProcessor.Imaging.Quantizers.OctreeQuantizer

Encapsulates methods to calculate the colour palette if an image using an Octree pattern.

Inheritance: ImageProcessor.Imaging.Quantizers.Quantizer

Public Methods

Method	Description
OctreeQuantizer ( ) : System	Initializes a new instance of the OctreeQuantizer class. The Octree quantizer is a two pass algorithm. The initial pass sets up the Octree, the second pass quantizes a color based on the nodes in the tree. Defaults to return a maximum of 255 colors plus transparency with 8 significant bits.
OctreeQuantizer ( int maxColors, int maxColorBits ) : System	Initializes a new instance of the OctreeQuantizer class. The Octree quantizer is a two pass algorithm. The initial pass sets up the Octree, the second pass quantizes a color based on the nodes in the tree

Method	Description
GetPalette ( System.Drawing.Imaging.ColorPalette original ) : System.Drawing.Imaging.ColorPalette	Retrieve the palette for the quantized image
InitialQuantizePixel ( ImageProcessor.Imaging.Colors.Color32 pixel ) : void	Process the pixel in the first pass of the algorithm This function need only be overridden if your quantize algorithm needs two passes, such as an Octree quantizer.
QuantizePixel ( ImageProcessor.Imaging.Colors.Color32 pixel ) : byte	Override this to process the pixel in the second pass of the algorithm

Retrieve the palette for the quantized image

protected GetPalette ( System.Drawing.Imaging.ColorPalette original ) : System.Drawing.Imaging.ColorPalette
original	System.Drawing.Imaging.ColorPalette	/// Any old palette, this is overwritten ///
return	System.Drawing.Imaging.ColorPalette

Process the pixel in the first pass of the algorithm

This function need only be overridden if your quantize algorithm needs two passes, such as an Octree quantizer.

protected InitialQuantizePixel ( ImageProcessor.Imaging.Colors.Color32 pixel ) : void
pixel	ImageProcessor.Imaging.Colors.Color32	/// The pixel to quantize ///
return	void

Initializes a new instance of the OctreeQuantizer class.

The Octree quantizer is a two pass algorithm. The initial pass sets up the Octree, the second pass quantizes a color based on the nodes in the tree.

Defaults to return a maximum of 255 colors plus transparency with 8 significant bits.

public OctreeQuantizer ( ) : System
return	System

Initializes a new instance of the OctreeQuantizer class.

The Octree quantizer is a two pass algorithm. The initial pass sets up the Octree, the second pass quantizes a color based on the nodes in the tree

public OctreeQuantizer ( int maxColors, int maxColorBits ) : System
maxColors	int	/// The maximum number of colors to return ///
maxColorBits	int	/// The number of significant bits ///
return	System

Override this to process the pixel in the second pass of the algorithm

protected QuantizePixel ( ImageProcessor.Imaging.Colors.Color32 pixel ) : byte
pixel	ImageProcessor.Imaging.Colors.Color32	/// The pixel to quantize ///
return	byte