Graphics Programs Reference
In-Depth Information
Relighting
Relighting is a compositing technique that is used to add extra light information not
existing in the received 3D render information. This process facilitates additional cre-
ative tweaks in compositing. Though this technique can only provide light without con-
sidering shadowing information, additional procedures can provide a convincing ap-
proach to this limitation.
The Normal node
Relighting in Blender can be performed using the Normal node. The following screen-
shot shows the relighting workflow to add a cool light from the right screen. The fol-
lowing illustration uses a
Hue Saturation Value
node to attain the fake light color. Al-
ternatively, any grading nodes can be used for similar effect. The technique is to use
the
Dot
output of the
Normal
node as the factor input for any grade node.
The following screenshot shows relighting with a cyan color light from the top using
the Normal node:
