User Manual

Histogram Proxy Scale
The Histogram Proxy Scale determines the precision used when creating and calculating
histograms. Lower values represent higher precision, and higher values produce a rougher,
generalized histogram.
Process Order
This menu is used to select whether adjustments to the image’s gamma are applied before or
after any changes made to the images levels.
Common Controls
Settings Tab
The Settings tab in the Inspector is also duplicated in other Color nodes. These common
controls are described in detail at the end of this chapter in “The Common Controls” section.
Color Curves [CCV]
The ColorCurves node
Color Curves Node Introduction
The Color Curves node is a spline-based node for performing Lookup table (LUT) color
manipulations. A separate spline is provided for each color channel. The effect can be animated
or dissolved and can be applied to the image using RGB, YUV, YIQ, CMY, or HLS color spaces.
The LUT view in the Color Corrector can be scaled using the + and - keys on the numeric
keypad. The color curves LUT fully supports out-of-range values—i.e., pixels with color values
above 1.0 or below 0.0.
The splines shown in this LUT view are also available from the Spline Editor, should greater
precision be required when adjusting the controls.
Inputs
The Color Curves node includes three inputs in the Node Editor.
–
Input: This orange input is the only required connection. It connects a 2D image that
is adjusted by the color curves.
–
Effect Mask: The optional effect mask input accepts a mask shape created by
polylines, basic primitive shapes, paint strokes, or bitmaps from other tools.
Connecting a mask to this input limits the color curves adjustment to only those
pixels within the mask. An effect mask is applied to the tool after it is processed.
–
Reference Image: The optional green input is used to connect a second 2D image
that can be used for reference matching.
–
Match Mask: This optional white input accepts any mask much like an effect
mask.However, this mask defines of the area to match during a Match. It offers
more flexibility in terms of shape than the built-in Match reference rectangle in the
Inspector.
Chapter – 85 Color Nodes 1866