User Manual

Disparity To Z [D2Z]
The DisparityToZ node
NOTE: The Disparity to Z node is available only in Fusion Studio and
DaVinci Resolve Studio.
Disparity to Z Node Introduction
Disparity To Z takes a 3D camera and an image containing a disparity channel as inputs, and
outputs the same image but with a newly computed Z channel.
Optionally, this node can output Z into the RGB channels. Ideally, either a stereo Camera 3D or
a tracked stereo camera is connected into Disparity To Z. However, if no camera is connected,
the node provides artistic controls for determining a Z channel. The depth created by this node
can be used for post effects like fogging or depth of field (DoF).
The Z values produced become more incorrect the larger (negative) they get. The reason is that
disparity approaches a constant value as Z approaches -infinity. So Z = -1000 and Z = -10000
and Z = -100000 may map to D=142. 4563 and D=142. 4712 and D=142. 4713. As you can see,
there is only 0.0001 in D to distinguish between 10,000 and 100,000 in Z. The maps produced
by disparity are not accurate enough to make distinctions like this.
Inputs
The three inputs on the Disparity To Z node are used to connect the left and right images and a
camera node.
–
Left Input: The orange input is used to connect either the left eye image or the stack
image.
–
Right Input: The green input is used to connect the right eye image. This input is
available only when the Stack Mode menu is set to Separate.
–
Stereo Camera: The magenta input is used to connect a stereo camera node.
Outputs
Unlike most nodes in Fusion, Disparity To Z has two outputs for the left and right eye.
Left Output: This holds the left eye image with a new Z channel, or a Stacked Mode image with
a new disparity channel.
Right Output: This holds the right eye image with a new Z channel. This output is visible only if
Stack Mode is set to Separate.
Chapter – 106 Stereo Nodes 2365