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Yellowstone
Landscape Level Visualization
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covering the largest possible area, the landscape level, are used
primarily to provide an overview of the study region and show the
general spatial arrangement of landscape elements. The landscape level
visualizations for Yellowstone used VNS to demonstrate the image-based
visualization approach of draping imagery data over a digital terrain
model. Six remotely sensed image data sets at a variety of spatial
resolutions, from 30 m Landsat Thematic Mapper imagery to sub-meter
digital camera imagery, were draped over an 80 m digital elevation
model (DEM) using texture-mapping techniques. Finally, GIS vector
layers, such as the Yellowstone park boundary and text labels, were
inserted to aid in interpretability. Still renders were generated
from this project and an animation was created using a pre-defined
camera flight path in the form of a vector GIS layer. The flight path
was chosen to highlight each of the imagery types available for the
park, demonstrating their coverage extent, spatial resolution and
spectral characteristics. The geovisualizations, stills and animations,
help to orient those unfamiliar with the study area, illustrate properties
of remotely sensed data and provide a general sense of land cover
structure. |
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(Click
the image to view the animation)
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