Employing Dynamic Transparency for 3D Occlusion Management: Design Issues and Evaluation
Paper i proceeding, 2007

Recent developments in occlusion management for 3D environments often involve the use of dynamic transparency, or virtual “X-ray vision”, to promote target discovery and access in complex 3D worlds. However, there are many different approaches to achieving this effect and their actual utility for the user has yet to be evaluated. Furthermore, the introduction of semi-transparent surfaces adds additional visual complexity that may actually have a negative impact on task performance. In this paper, we report on an empirical user study comparing dynamic transparency to standard viewpoint controls. Our implementation of the technique is an image-space algorithm built using modern programmable shaders to achieve real-time performance and visually pleasing results. Results from the user study indicate that dynamic transparency is superior for perceptual tasks in terms of both efficiency and correctness.

3D environments

Information Visualization

dynamic transparency

occlusion

Författare

Niklas Elmqvist

Chalmers, Data- och informationsteknik, Datavetenskap, Datavetenskap, Datakommunikation och distribuerade system (Chalmers)

Ulf Assarsson

Chalmers, Data- och informationsteknik, Datorteknik

Philippas Tsigas

Chalmers, Data- och informationsteknik, Datavetenskap, Datavetenskap, Datakommunikation och distribuerade system (Chalmers)

Lecture Notes in Computer Science

0302-9743 (ISSN)

Vol. 4662 532 - 545

Ämneskategorier

Datorteknik

Programvaruteknik

Människa-datorinteraktion (interaktionsdesign)

Datavetenskap (datalogi)

ISBN

978-3-540-74794-9