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Old network
As of Houdini 20.5, use Copernicus nodes instead of Compositing nodes. Though both networks still exist, the Compositing network is now designated as COP Network - Old. The Compositing network and its nodes will be deprecated and then removed in a future Houdini release.
This operation creates a depth-of-field mask, which describes how out of focus parts of the image are. Combined with a Blur or Defocus COP, with the mask set to M and “Per-Pixel Blur/Defocus” on, a depth-of-field effect can be done. This mask can also used as an input to color correction operations to accentuate an area of interest.
A point or depth plane (P or Pz) must be present in order for this operation to produce valid results.
Overloading VEX Parameters ¶
This operator is implemented in VEX, which supports parameter overloading. If the first input has a plane which matches an operation parameter’s channel name, the input plane will be used as the parameter’s value, effectively overriding it. The overloaded parameter is then evaluated from the plane on a per-pixel basis.
eg. If the input COP has the following planes:
C{r,g,b}
A
fogdensand it is fed into a VEX Fog COP, the fog density will be determined at each pixel by the fogdens plane, since the Fog Density parameter’s channel name matches the 'fogdens' channel name.
Parameters ¶
Focus Distance
The distance where everything is entirely in focus.
Depth Adjustment
Increase or decrease the size of the area that will be out of focus. Corresponds to the “depth of focus” on a real camera lens.
Distance Adjustment
Adds a constant value to the distance (which is not the same as adjusting the focus distance, which adjusts the dropoff as well).
Default Mask Value
The mask value to use when a depth-of-field value cannot be computed (if the depth is zero).
Locals ¶
L
Sequence length
S
Start of sequence
E
End of sequence
IL
Input sequence length
SR
Sequence frame rate
NP
Number of planes in sequence
W,H
Width and height of image
I
Image index (0 at start frame)
IT
Image time (0 at start frame)
AI
Current plane array index
PI
Current plane index
PC
Num of channels in current plane
CXRES
Composite Project X resolution
CYRES
Composite Project Y resolution
CPIXA
Composite Project pixel aspect ratio
CDEPTH
Composite Project raster depth
CBP
Composite Project black point
CWP
Composite Project white point
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