Click or drag to resize
Accord.NET (logo)

ErrorDiffusionColorDithering Class

Base class for error diffusion color dithering.
Inheritance Hierarchy
SystemObject
  Accord.Imaging.ColorReductionErrorDiffusionColorDithering
    Accord.Imaging.ColorReductionColorErrorDiffusionToAdjacentNeighbors

Namespace:  Accord.Imaging.ColorReduction
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0
Syntax
public abstract class ErrorDiffusionColorDithering
Request Example View Source

The ErrorDiffusionColorDithering type exposes the following members.

Constructors
  NameDescription
Protected methodErrorDiffusionColorDithering
Initializes a new instance of the ErrorDiffusionColorDithering class.
Top
Properties
  NameDescription
Public propertyColorTable
Color table to use for image dithering. Must contain 2-256 colors.
Public propertyUseCaching
Use color caching during color dithering or not.
Top
Methods
  NameDescription
Public methodApply(Bitmap)
Perform color dithering for the specified image.
Public methodApply(UnmanagedImage)
Perform color dithering for the specified image.
Protected methodDiffuse
Do error diffusion.
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Top
Fields
  NameDescription
Protected fieldheight
Processing image's height.
Protected fieldpixelSize
Processing image's pixel size in bytes.
Protected fieldstride
Processing image's stride (line size).
Protected fieldwidth
Processing image's width.
Protected fieldx
Current processing X coordinate.
Protected fieldy
Current processing Y coordinate.
Top
Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodTo(Type)Overloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
Public Extension MethodToTOverloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
Top
Remarks

The class is the base class for color dithering algorithms based on error diffusion.

Color dithering with error diffusion is based on the idea that each pixel from the specified source image is substituted with a best matching color (or better say with color's index) from the specified color table. However, the error (difference between color value in the source image and the best matching color) is diffused to neighbor pixels of the source image, which affects the way those pixels are substituted by colors from the specified table.

The image processing routine accepts 24/32 bpp color images for processing. As a result this routine produces 4 bpp or 8 bpp indexed image, which depends on size of the specified color table - 4 bpp result for color tables with 16 colors or less; 8 bpp result for larger color tables.

See Also