Mitasova, H., Mitas, L., Ratti, C., Ishii, H., Alonso J., and Harmon, R.S., 2006,
Real-time Human Interaction With Landscape Models Using a Tangible Geospatial Modeling Environment,
IEEE Computer Graphics & Applications, Special Issue - GeoVisualization, 26(4), pp 55-63.[pdf]

Map to VISSTA lab (pdf 2.5MB)

Setup December 2007:

a b

DEM+cover            overland flow           soil detachment         net erosion/deposition

real world model

plasticine model: initial

plasticine model: road breach

plasticine model: checkdam

plasticine model: buildings I

plasticine model: buildings II

plasticine model: buildings III

The first experiments

a b

The first set up

Animations: overland flow
over smoothed DEM derived from real-world data
over DEM from TanGIS
over DEM from TanGIS with modified surface roughness and buildings

Future system linked to real time monitoring

Terrain and wireless signal analysis for web cam monitoring

Notes

Old solid model elevation difference: 72mm representing 76ft, 6x vertical exageration, horizontal scale 1:2000,
DEM with 315x284 rows/cols at 6ft resolution and model 630x560(fix) rows/cols at 1mm resolution
New model: 50mm, 3x vertical exageration, horizontal scale 1:1200, 0.4x0.4m,
DEM 480x480m, 1m resolution, derived from lidar

Real world test area : airphotos(2005)

b
observed and simulated flow

c more photos

Model scanned at MIT and lidar-based DEMs
a b c d
a) Scanned model interpolated at 1mm resolution, high tension/low smoothing
b) Scanned model interpolated at 1mm resolution, low tension/high smoothing
c) Lidar-based DEM (2001) interpolated at 2m(6ft) resolution, high tension/low smoothing
d) Lidar-based DEM (2001) interpolated at 2m(6ft) resolution, low tension/high smoothing