In addition to specifying transfer fuctions, we have many more interaction tasks, e.g. to support therapy planning: Selection, movement of clipping planes, virtual resection, implant placement, distance and angle measurements and path planning for needle-based interventions. Selection is particularly difficult in case of semi-transparent rendering where several objects are visible at a picking ray. An interesting variant of clipping is selective clipping that does affect only selected structures. Virtual resection, i.e., the removal of an arbitrarily-shaped region is challenging. We describe several variants and discuss their pros and cons.

Chapters
00:00 - Interaction Tasks and Techniques
06:58 - Transparent Objects
15:44 - Clipping Planes
23:45 - Virtual Resection
49:50 - Volume Exploration

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