Topological Galleries: A High Level User Interface for Topology Controlled Volume Rendering

MacCarthy, Brian ; Carr, Hamish ; Weber, Gunther H.

Lawrence Berkeley National Laboratory

关键词: Statistics;    Containment;    Design;    97 Mathematical Methods And Computing;    Transfer Functions;   

DOI  :  10.2172/1050440
RP-ID  :  LBNL-5019E
RP-ID  :  DE-AC02-05CH11231
RP-ID  :  1050440

美国|英语

来源: UNT Digital Library

【 摘 要 】

Existing topological interfaces to volume rendering are limited by their reliance on sophisticated knowledge of topology by the user. We extend previous work by describing topological galleries, an interface for novice users that is based on the design galleries approach. We report three contributions: an interface based on hierarchical thumbnail galleries to display the containment relationships between topologically identifiable features, the use of the pruning hierarchy instead of branch decomposition for contour tree simplification, and drag-and-drop transfer function assignment for individual components. Initial results suggest that this approach suffers from limitations due to rapid drop-off of feature size in the pruning hierarchy. We explore these limitations by providing statistics of feature size as function of depth in the pruning hierarchy of the contour tree.