Apple Shake 4 - Manual (Page 637)

Chapter 23 Color Correction 637
Atomic-Level Functions
The term atomic-level is used because each of these nodes applies a single
mathematical operation to the affected image. Because of their simplicity, they are easy
to work with. They are also ideal for use on the command line.
HueCurves A node that isolates and adjusts an image based on its hue. Ideal
for spill suppression.
Invert Turns black to white and vice versa. Works best on normalized
images between 0 and 1.
LogLin Performs logarithmic to linear, and linear to logarithmic color space
conversion.
Lookup/HLS/HSV Applies lookup expressions or curve manipulation to your image. It
is faster than ColorX for non-pixel based lookups.
LookupFile Pulls a lookup table from a file.
MDiv Used to unpremultiply an image by its alpha channel.
MMult Used to premultiply an image by its alpha channel.
Monochrome Gives you weighted control over desaturating an image to make it
black and white.
Mult Multiplies the values in each color channel of an image. The R, G,
and B color channels can be adjusted individually.
Reorder Swaps channels within an image. See also Layer–Copy and Layer–
SwitchMatte to copy channels from other images.
Saturation Controls the saturation levels. Saturation can either be boosted or
decreased.
Set Sets a channel to a constant level, replacing whatever values were
previously in that channel. Channels can be adjusted together or
separately.
SetAlpha Sets the alpha level to a constant value, replacing whatever values
were previously in that channel. This node also crops the Infinite
Workspace.
SetBGColor Sets the color outside of the DOD.
Solarize A misguided Invert function. Good for Beatles album covers.
Threshold Clips the color values in an image. Color channels can be clipped
individually.
VideoSafe Clips luminance or saturation values that are above the broadcast-
legal range for video.
Node Description