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For example, gamma gets applied before contrast but after gain. The Brightness Contrast is
also reversible using the Forward and Reverse buttons. So color corrections, once applied, can
be reversed further downstream.
For this to work best, image processing should operate in 32-bit floating point.
Inputs
The two inputs on the Brightness Contrast node are the input and effect mask.
Input: The orange input connects the primary 2D image for the brightness contrast.
Effect Mask: The blue input is for a mask shape created by polylines, basic primitive
shapes, paint strokes, or bitmaps from other tools. Connecting a mask to this input
limits the Brightness Contrast adjustment to only those pixels within the mask. An
effect mask is applied to the tool after the tool is processed.
Basic Node Setup
The Brightness Contrast node, like many 2D image-processing nodes, receives a 2D image like
a Loader node or the MediaIn1 shown below. The output continues the node tree by connecting
to another 2D image-processing node or a Merge node.
A Brightness Contrast node applied to a MediaIn1 node
Inspector
Controls Tab
The Controls tab contains all the primary controls necessary for customizing the brightness,
contrast operations.
Chapter – 85 Color Nodes 1850