C# 클래스 AForge.Imaging.ColorReduction.OrderedColorDithering

Color dithering with a thresold matrix (ordered dithering).

The class implements ordered color dithering as described on Wikipedia. The algorithm achieves dithering by applying a threshold map on the pixels displayed, causing some of the pixels to be rendered at a different color, depending on how far in between the color is of available color entries.

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.

Sample usage:

 // create color image quantization routine ColorImageQuantizer ciq = new ColorImageQuantizer( new MedianCutQuantizer( ) ); // create 256 colors table Color[] colorTable = ciq.CalculatePalette( image, 256 ); // create dithering routine OrderedColorDithering dithering = new OrderedColorDithering( ); dithering.ColorTable = colorTable; // apply the dithering routine Bitmap newImage = dithering.Apply( image );

Initial image:

Result image:

파일 보기 프로젝트 열기: holisticware-admin/MonoVersal.AForgeNET 1 사용 예제들

공개 메소드들

메소드	설명
Apply ( Bitmap sourceImage ) : Bitmap	Perform color dithering for the specified image.
Apply ( UnmanagedImage sourceImage ) : Bitmap	Perform color dithering for the specified image.
OrderedColorDithering ( ) : System	Initializes a new instance of the OrderedColorDithering class.
OrderedColorDithering ( byte matrix ) : System	Initializes a new instance of the OrderedColorDithering class.

비공개 메소드들

메소드	설명
GetClosestColor ( int red, int green, int blue, byte &colorIndex ) : Color

메소드 상세

Apply() 공개 메소드

Perform color dithering for the specified image.

Unsupported pixel format of the source image. It must 24 or 32 bpp color image.

public Apply ( Bitmap sourceImage ) : Bitmap
sourceImage	System.Drawing.Bitmap	Source image to do color dithering for.
리턴	System.Drawing.Bitmap

Apply() 공개 메소드

Perform color dithering for the specified image.

Unsupported pixel format of the source image. It must 24 or 32 bpp color image.

public Apply ( UnmanagedImage sourceImage ) : Bitmap
sourceImage	UnmanagedImage	Source image to do color dithering for.
리턴	System.Drawing.Bitmap

OrderedColorDithering() 공개 메소드

Initializes a new instance of the OrderedColorDithering class.

public OrderedColorDithering ( ) : System
리턴	System

OrderedColorDithering() 공개 메소드

Initializes a new instance of the OrderedColorDithering class.

public OrderedColorDithering ( byte matrix ) : System
matrix	byte	Threshold matrix (see property).
리턴	System