Gimp - 2.2 Guía Del Usuario

CHAPTER 13. FILTERS

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Modify Blue/Luminance Channel This checkbox allows modifications to be made to

the Blue or Luminance of the active selection or layer.

Frequency Sliders The F requency sliders control changes to the applicable channel.

The slider determines the frequency intensity at which the colors will be mapped.

Phaseshift Sliders The Phaseshift sliders control changes to the applicable channel.

The slider determines the shift in frequency that will be used to map the channel

colors.

See also

Further information can be found in the glossary regarding: Channels and HSL

13.8

Alien Map

Overview

The Alien Map filter is a color mapping filter that works by applying mathematical

algorithms to the existing color values in the active image. The mathematical color

adjustments are made using a combination of Sine, Cosine, and None in varying am-

plitudes.. Alien Map Options

Alien Map Settings

Red / Green / Blue Channels The Red, Green, and Blue channel labels display and

allow selection of the mathematical transform that will be used on that color chan-

nel.

•

Sine: The pixel color for that channel will be adjusted using Sine calcula-

tion.

•

Cosine: The pixel color for that channel will be modified using Cosine

calculation.

•

None: No adjustment will be made to this color channel.

Red / Green / Blue Sliders The three sliders represent the amount of color that will be

used in the chosen calculations for each channel. The maximum value will use

all available color information for that channel.