Integrating Expanding Annotations with a 3D explosion Probe By Henry Sonnet, Sheelagh Carpendale, and Thomas Strothotte Presented by Ryan Buterbaugh

3D: Information Overload? 3D interactive environments can contain lots of information Problems: –occlusion/multiple objects –displaying annotations –separating whole into parts

Layers of Information 3D environments can have various info: –model itself –textual annotation –additional multimedia (images/movies/etc) –internally-contained sub-models How can this all be intelligently integrated and easily manipulated and understood?

Focus on Text Stipulations for annotating: –must be readable –must be unambiguous as to what is annotated –must not hide other information –minimal or no constraints on size of annotation

One Method Create explosion diagrams and allow user to easily request accompanying text

Challenges Separating distinct, annotated objects Locating point referenced by annotation How to display annotation –(polygon, shading, connection points, etc)

Applications to Midway Gardens How to display annotations for models? Handle occlusion due to multiple versions of uncertainty Handle sub-parts of models –ie: “Note that the hand on this sprite is holding a dove” Effective tool for zooming, expanding, triggering annotations, etc