Week 7 Summaries
A Practical Multi-viewer Tabletop Autostereoscopic Display
The paper discusses methods and technologies used to create a multi-viewer tabletop autostereoscopic display. The display had the requirements of multiple users begin able to see 3D content on the display from different angles. Previous work had been done in this area but the main driving factor in this paper was to make a practical non high cost display. The system from the paper was inspired by the “Random Hole Display” which makes it so that different users from different views would only see a subset of the displays total native pixels. The main challenge with the display was how to handle the case when different users were able to see the same pixels and their method of solving the problem is a combination of color blending and approximate error diffusion. Optical trackers were used to track where viewers were in relation to the display and the system supported the addition and removal of viewers without much impact to video.
Scape: Supporting Stereoscopic Collaboration in Augmented and Projective Environments
The paper discusses a virtual work environment aimed at allowing users at separate locations to interact and work together as if they were in the same room. The goals of the system were to provide individual perspective views of the work area, allow users equal and natural access to tasks, allow users to communicate and perceive the presence of other users, and to have the system able to switch between the workspace and communication space. The system consisted of a work bench and walls, both of which were retro-reflective. Tracking of users by a Hiball 3000 system, similar to the one described in class.
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