2011

■ Depth (Z), surface normal directions (XYZ), or motion vectors (XY)
Channel Assignments
Once you have imported your EXR media, you can use the Options tab to
assign and import the channels. A channel view shows the channels that are
present in the files and channel groups are defined in the project preferences.
NOTE These tools are also available when using the Image Import tool (Options
tab).
For both Channel Views and Channel Groups, the None option always exists.
Although it's not actually a group, it does allow you to assign any input
channel to any output channel. The None option is also a fallback group when
the file does not contain a channel that fits into any existing group definition.
The None option is the default group selected, and the initial assignment
always attempts to match a channel with itself, then assigns it arbitrarily by
using an alphanumeric order.
Channel Views
The available channel views are listed. You can select a channel view to be
displayed in the mini-player. Or if you are using the Import Image tool, the
channel view is displayed on the tool node.
Multi-view OpenEXR files use the convention that channel names are
composed of layer names separated by periods, with the final channel name
at the end. The view name must be the ultimate layer name, that is, the
penultimate period-delimited component in each channel name. In other
words, the view name is followed by a period and a final channel name in the
format layer.view.channel or view.channel.
128 | Chapter 8 Importing Media