Week 12 Discussions
Main Paper :
The paper proposes a new technique to navigate through 3D work spaces. It makes use of both position and height to determine the velocity of motion. It also puts forth a technique to orient but the technique has it’s limitations.
Paper 1: Rapid controlled movement through a virtual 3D workspace.
http://dl.acm.org/citation.cfm?id=97898&bnc=1
Written in 1990 the paper in one of the early work on viewpoint navigation. It proposes a technique to traverse large spaces rapidly at the same time avoiding jitters and over shooting.
Paper 2: HoverCam: interactive 3D navigation for proximal object inspection.
http://dl.acm.org/citation.cfm?id=1053439&bnc=1.
The paper focuses on the target object and orientation and movement of the user around it. Unlike the main paper it’s orientation model can be used for 3D obejcts in a 3D work space.
The idea behind the selection of papers was to find papers which focus on both reaching the target object in a work space and then orienting the user intuitively. The first paper focuses more on reaching the target object and does not support a separate orientation technique. The main paper shows techniques to do both where as the third paper focuses more on the orientation of the view around a object.
Questions:
1. How efficient is the use of surface normals to position a viewpoint ?
2. How important is it for a technique to be intuitive ?
3. Can we integrate Hovercam algorithm to solve the problem of overshooting in coupled flying technique ?
4. Would letting the user position various viewpoint in the world be more effective than zooming in and out ?
5. How important is it for the user to know the view from a position before actually getting there ?
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