| 摘要 |
A capability for guided navigation in an interactive virtual three-dimensional environment is provided. Such a capability may enhance user experience by providing the feeling of free-form navigation to a user. It may be necessary to constrain the user to certain areas of good visual quality, and subtly guide the user towards viewpoints with better rendering results without disrupting the metaphor of freeform navigation. Additionally, such a capability may enable users to “drive” down a street, follow curving roads, and turn around intersections within the interactive virtual three-dimensional environment. Further, this capability may be applicable to image-based rendering techniques in addition to any three-dimensional graphics system that incorporates navigation based on road networks and/or paths. |
