Optics-2022 : Filters : Selective Color Correct
Selective Color Correct
Description
Colors can be selectively isolated through the use of a matte and adjusted using hue, saturation, brightness, gamma, contrast, temperature, cyan/magenta, red, green, and blue controls.
Category
Color.
Color Correct
Certain parts of the image are isolated by the creation of a matte. Whatever is shown as white in the matte can be adjusted by the color controls below.
Hue
Rotates the hue of the image.
Saturation
Adjusts the saturation of the image. Positive values saturate, negative values desaturate.
Brightness
Adjusts the brightness of the image. Positive values brighten, negative values darken.
Contrast
Adjusts the contrast of the image. Positive values increase contrast, negative values decrease contrast.
Gamma
Adjusts the gamma of the image. The gamma adjustment leaves the white and black points the same and only modifies the values in-between. Positive values lighten the midtones, negative values darken the midtones.
Temperature
Sets the color of the image to be either warmer or cooler. Dragging the slider to the right makes the image cooler (bluer) and dragging the slider to the left makes the image warmer (redder).
Cyan/Magenta
Adds either Cyan or Magenta to the image. Dragging the slider to the right makes the image more magenta and dragging the slider to the left makes the image more cyan.
Red
Adds or subtracts red from the image.
Green
Adds or subtracts green from the image.
Blue
Adds or subtracts blue from the image.
Temperature
Sets the color temperature of the image. Dragging the slider to the right makes the image cooler (bluer) and dragging the slider to the left makes the image warmer (redder).
Matte
A matte is created to isolate areas to be color corrected. Using advanced image slicing algorithms, mattes are created using luminance, hue, saturation, average, red, green, blue, cyan, magenta, and yellow values.
Extract On
Extract On selects the type of matte. Select whichever type isolates the desired values.
A matte is created based on one of the following:
Luminance
A matte is created based on the luminance of the image.
Hue
A matte is created based on the hue of the image. When adjusting the Position parameter, you are selecting different hues.
Saturation
A matte is created based on the saturation of the image.
Average
A matte is created based on the average of the image’s RGB values.
Red
A matte is created based on the image’s red values.
Green
A matte is created based on the image’s green values.
Blue
A matte is created based on the image’s blue values.
Cyan
A matte is created based on the image’s cyan values.
Magenta
A matte is created based on the image’s magenta values.
Yellow
A matte is created based on the image’s yellow values.
Position
The Position value pinpoints the color values to be used in the matte. For a luminance matte, a Position value of 100 would make a white matte of the highlights and a value of 0 would make a white matte of the shadows. In the flower image below, look at how the matte varies for different Position values in a red extraction. When the Position is at a value of 100, the red flowers are shown as white in the matte.
When the Position is moved to 50, the red flowers turn black.
Range
Increases or decreases the range of values in the matte. A low Range value indicates a narrow range of values. A high Range value indicates a large range of values included in the matte.
Black Clip
Blacks in the matte are made blacker by increasing the value of the slider. As the slider value increases, more values are clipped to black. This is helpful for getting rid of unwanted gray areas in what should be the black part of the matte.
White Clip
Whites in the matte are made whiter by increasing the value of the slider. As the slider value increases, more values are clipped to white. This is helpful for getting rid of unwanted gray areas in what should be the white part of the matte.
Shrink/Grow
Shrinks or grows the matte. Negative values shrink and positive values grow the matte.
Blur
Blurs the matte.
Invert
Off
Does nothing to the matte.
On
Inverts the luminance values of the matte.