Quantize Image - Quantize a 24 bit image to 256 colors or less.

Name

	Quantize Image - Quantize a 24 bit image to 256 colors or less.

Summary

	Name	Quantize Image
	Type	Filter
	Inputs	Image - 	field 2D 4-vector byte REQUIRED
	Outputs	Palette - 	colormap
	Parameters
	Name		Type	Default	Choices
	Max Colors	idial	16	1	256

Description

	Convert an image with 24 bits/pixel to 256 or fewer colors.
	This is done with something resembling the Heckbert mean cut
	algorithm.

Inputs

	Image - field 2D 4-vector byte
	Each pixel is a single byte which is an index into the
	resulting colormap.

Parameters

Max Colors (idial)

Outputs

	Palette - colormap

Example networks

	To see what an image would look like with fewer colors:
		read image
		   |
		   +-----------------------+
		   |			   |
		display image		quantize image
					   |   |
					   |   |
					colorizer
					   |
					   |
					display image

Related modules

	write gif
	write pcx

See also