Jongwook Jin (20025299) jwjin@vr.kaist.ac.kr VR Lab, CS Dep, KAIST
SEP/22/2002
Title
:
Problem
Definition:
To service geological 3D map information on
the low bandwidth wireless network, we need proper transfer mechanism of 3D
models.
Motivation:
Very complex 3D model is too heavy to
transfer on the low bandwidth network. To service massive geological
information, we must adopt some geometric simplification mechanism to transfer
3D models on the low bandwidth network.
Approach:
Initially, geological map has 2D
connectivity which reduces the complexity of 3D model simplification method.
With the methods[1][2], the 3D geometry information
can be transfer with progressive fashion. This progressive transmission will
reduce the user's await and details of 3D model will go higher with time.
For the geometric data of initial service,
the geometric data comes from height level image. Off-line S/W will sample the
height image to make height blocks. User will request one of them to server.
After building mobile service, experiment
finds the optimal configurations with given 3D model sets for mobile service.
Experiments are the following:
1. Usability
2. Empirical server and client configuration
Schedule
OCT/28 Off-line
geometry simplification method
NOV/7 Complete
the On-line service with TCP-IP
on top of IEEE 802.11.
NOV/15 Experiment of
usability
NOV/30 Empirical
configuration of service
Deliverable:
The
results will be
1. Analysis of usability and empirical
configuration of mobile service
2. Off-line map simplification with high
resolution image
3. On-line server and client
4.
Reference
list
[1] Hoppe, H. Progressive meshes. SIGGRAPH
1996, pp 99-108
[2] Hoppe, H. View-Dependent Refinement of
Progressive Meshes.
Computer Graphics
(SIGGRAPH 1997 Proceedings), pages 189-198.
Remark