Digital Earth: TerraVision: VRML Sets


VRML Sets
•	Overview
•	Anchor/LOD Terrains
•	QuadLOD Terrains
•	Inline/LOD Terrains
•	Terrains with Site Models
•	Interactive Manipulation with the EAI
•	Composite Datasets

Digital Earth> Terravision^TM > VRML Sets > Terrains with Site Models

Terrains with Site Models

We have produced a number of terrain models that include georeferenced site models, or other cultural features. The following links provide examples of terrains with building models, and weather simulations accurate overlayed. All of these currently use the Anchor/LOD terrain representation.

	McKenna MOUT site This is a small region of the McKenna MOUT site in Fort Benning. The imagery is 15 cm resolution imagery, and this site is not tiled. The elevation mesh is a TIN (triangulated irregular network). It includes building models with texture maps that were automatically extracted from the aerial imagery using SRI's Cartographic Modeling Environment (CME) product. Texture-mapped (TIN with site models)
	Fort Benning, GA A 3x2 km region around Fort Benning, with 15 cm resolution imagery. This dataset contains a total of 11 levels of detail, with a total dataset size of 166 MB. The imagery for this dataset is 18932 x 15533 pixels (JPEG compressed, grayscale). This dataset contains overlayed VRML site models (buildings, roads, and functional areas). These models were extracted automatically from SRI's Cartographic Modeling Environment (CME) product, and directly incorporated into the VRML terrain. Texture-mapped (4 LODs per scene with site models)
	Denver, CO A 233x206 km region encompassing part of Colorado state, with 30 m resolution imagery. The city of Denver is toward the lower right corner of image. This dataset contains a total of 9 levels of detail, with a total dataset size of 73 MB. Elevations are exaggerated by a factor of 5. The imagery for this dataset is 6854 x 7755 pixels (JPEG compressed). This model contains an overlay of a Clear Air Turblence (CAT) isosurface that was recorded over this portion of the Rockies. The CAT VRML model was provided by the National Center for Atmospheric Research (NCAR), Boulder. Texture-mapped (4 LODs per scene with CAT)
	Camp Pendleton, CA A 59x70 km region around the Camp Pendleton site in Southern California with 30 m resolution imagery. This dataset contains a total of 8 levels of detail, with a total dataset size of 6 MB. Elevations are exaggerated by a factor of 5. The imagery for this dataset is 1992 x 2317 pixels (JPEG compressed). This models contains an overlay of wind vectors at 400m resolution that were supplied by the Naval Oceanographic Office (NAVO). Texture-mapped (4 LODs per scene with wind vectors)