User Manual

Color Space [CS]
The ColorSpace node.
Color Space Node Introduction
The Color Space node provides the ability to work on an image in a variety of alternate color
space formats. By default, Fusion uses the RGB color space, and most nodes and displays
interpret the primary channels of an image as Red, Green, and Blue.
Changing the color space from RGB causes most images to look odd, as Fusion’s viewers still
interpret the primary channels as Red, Green, and Blue. For example, viewing an image
converted to YUV in one of the viewers shows the Y channel as Red, the U channel as Green,
and the V channel as Blue.
Several common elements of the Fusion interface refer to the RGB channels directly. The four
buttons commonly found on the Inspector’s Settings tab to restrict the effect of the node to a
single color channel are one example. When a conversion is applied to an image, the labels of
these buttons remain R, G, and B, but the values they represent are from the current color
space. (For example, Red is Hue, Green is Luminance, and Blue is Saturation for an RGB to HLS
conversion. The Alpha value is never changed by the color space conversion.)
Inputs
The Color Space node includes two inputs: one for the main image and the other for an
effect mask.
–
Input: This orange input is the only required connection. It connects a 2D image that
is converted by the color space operation.
–
Effect Mask: The optional blue 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 space adjustment to only those
pixels within the mask. An effect mask is applied to the tool after it is processed.
Basic Node Setup
The Color Space node, like many 2D image-processing nodes, receives a 2D image like a
Loader or the MediaIn1 shown below, processes the image, and then extends the node tree by
connecting to another 2D image-processing node or a Merge node.
A Color Space node applies a conversion to a MediaIn1 node
Chapter – 85 Color Nodes 1878