Dithering Methods

The following are constants for the dithering methods:

Constant	Meaning
None	Use nearest color matching.
FloydStein	Use the Floyd-Steinburg dithering method. Approximate the original color depth by diffusing errors to the four neighboring pixels.
Stucki	Use the Stucki dithering method. This is a variation of the Jarvis method.
Burkes	Use the Burkes dithering method. This is a variation of the Stucki method removing a line of pixels that errors are diffused to.
Sierra	Use the Sierra dithering method. This is a faster variation of the Jarvis method propagating errors to fewer neighboring pixels.
StevensonArce	Use the Stevenson Arce dithering method. This is method is slow but more likely to produce higher quality images.
Jarvis	Use the Jarvis dithering method. Approximate the original color depth by diffusing errors to twelve neighboring pixels. It is slower than the Floyd-Steinburg method.
Ordered	Use ordered dithering, which is faster but less accurate than other dithering methods.
Clustered	Use clustered dithering.