Image - Hue / Saturation

Allows simultaneous changing of hue, saturation and lightness in RGB or RGBa images. See the Colors as Hue, Saturation and Brightness topic for more information on these concepts.

 

Hue

Shift color of all pixels clockwise or counterclockwise about the color wheel.

Saturation

Increase or decrease color saturation. Fully-saturated colors are very bright, while low saturation are grayish.

Lightness

Increase or decrease lightness. Zero lightness results in all black pixels, while full lightness is white.

Preview

Check to see effect in action.

 

 

The hue slider shifts the colors of all pixels in a plus or minus direction around the color wheel. Plus or minus 180 degrees are equivalent. Blue tones shifted 180 degrees will end up yellow, as may be seen in the blue sky in the sample pictures. Use hue to shift images slightly, such as more or less red or blue throughout the image.

 

images/hue_circle.gif

The saturation slider increases or decreases the intensity of colors, ranging from white (no saturation) to grayish colors to bright, vivid colors (full saturation).

 

images/colors_saturation.gif

 

The lightness slider controls how light or dark each pixel as compared to an absolute gray scale from black to white.

 

images/colors_brightness.gif

 

Increasing lightness goes from black to colors to white.

 

See also: Colors as Hue, Saturation and Brightness

 

Note: The illustrations above are shown using only 256 colors and thus will appear "grainy" as compared to true colors in Manifold images.