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  This web page contains a list of new features in the latest release of the TerraVisionTM terrain visualization system. You can download the latest version of TerraVision from the Dowload link on the left. For more information on any of these descriptions, please refer to the TerraVision FAQ and User Guide.

What's New in 6.0

FIRST OPEN SOURCE RELEASE

Version 6.0 is the first binary release of the TerraVision system as an Open Source product. The license and about windows have been updated accordingly. Also, the default installation will point toward the DSI Internet2 server for all TerraVision datasets because the SRI server is no longer active. We now also use the Open Source Inno Setup utility to provide the Windows installer, which gives us a much smaller installer binary.


Oct 31 2002: SRI releases TerraVision as Open Source

What's New in 5.5

CONCURENT DATASET LOADING

Datasets loaded from the File/Open window are now loaded in a separate thread. This means that the system does not lock up while waiting to contact the server, which could be a problem if the server is unavailable.

DATASET CONSOLE

TerraVision now provides a Console feature from the File menu that lets you monitor all of the loading and unloading status for terrain and GeoVRML models. This is useful to diagnose problems and monitor progress.

PROTOTYPE SKY RENDERING

A proof-of-concept implementation has been performed to allow TerraVision to render multiresolution datasets in the sky as well as on the ground. This feature could enable browsing of the massive sky imagery datasets that are starting to come online.

SUPPORT FOR DEM-LESS OIs

TerraVision can now render an image dataset without the need for a DEM dataset. Entries in the tiles.tspec file can be used to control the altitude above the ellipsoid that the dataset is rendered at. This feature can only be used via the command line at the current time, where an -oi option can be given without a corresponding -dem option.

IMPROVED ERROR REPORTING

Tighter integration between the TerraVision core and the Tcl/Tk interface allows for more robust and useful error and status reporting via pop-up windows and status bar messages.

What's New in 5.1

OPTIMIZED VRML RENDERING

TerraVision's rendering of VRML and GeoVRML objects has been drastically improved, giving substantially higher frame rates than before. See Screeshots for a large urban modeling example.

OPTIMIZED HOST CONNECTIONS

TerraVision is now much more intelligent about using shared connections to the same remote servers. It now efficiently coordinates multiple tile requests from different threads and datasets to different datasets on the same remote server. This includes operations such as not requesting the same tile twice and using a constant set of threads per remote server.

OAA GUI INTERFACE

The Tcl/Tk release of TerraVision now includes a full menu to help manage OAA connections and communications. This includes connecting and disconnecting, finding who else is connected to the same facilitator, and sending messages to other connected TerraVision clients.

SOUTHERN HEMI UTMs

A long standing bug has been fixed that now allows TerraVision to correctly render terrain models that are in a southern hemisphere UTM zone.

GAZETTEER INTERFACE

TerraVision's Gazetteer now lets you resolve addresses down to the street number level in the US. Elsewhere, the gazetteer still lets you find places down to a city name granularity.

What's New in 5.0

.GEO SUPPORT

TerraVision provides support for SRI's .geo data discovery infrastructure. It can automatically locate any relevant information in the .geo index and stream that data to your display.

TCL/TK INTERFACE

A Tcl/Tk release of TerraVision has been developed to allow the full GUI version of TerraVision to run consistently under Windows, Unix, and potentially the Macintosh. We have released versions for Windows, IRIX, and Linux.

GEOVRML SUPPORT

TerraVision supports the GeoVRML standard for specifying arbitrary 3D georeferenced models. Currently supported GeoVRML nodes are GeoLocation, GeoMetadata, and GeoOrigin.

HYPERLINKS

TerraVision supports the use of Anchor nodes within a GeoVRML file for specifying hyperlinks to any resource. Hyperlinked geometry brightens when you mouse over it and provides a description of the resource in the status bar. Currently, clicking on a hyperlink will cause the resource to be opened in your web browser.

GAZETTEER INTERFACE

In the Tcl/Tk version of TerraVision, a Gazetteer interface is available under the Goto Address menu option. This lets you type in a city name in the world and TerraVision will fly to that location.

GRAPHICS CARD SUPPORT

The 3D graphics card support under Windows has been completely rewritten and should now take advantage of accelerated graphics modes under a wide selection of graphics cards.

CONFIGURATION

The latest version of TerraVision supports a consistent set of command line options across all versions as well as the same XML-base configuration files across different platforms.

NAV6 SUPPORT

The Netscape plugin version of TerraVision is fully supported under Netscape 4.x. It can also be used under Navigator 6, although with slightly limited capabilities due to the lack of LiveConnect support in Nav6.

BACKGROUND

A random starfield has been added when viewing from outer space and the old ground plane option has been updated to provide a low-resolution image of the earth on a flat ellipsoid.

 

 

Copyright © 2002 SRI International. All rights reserved.

For more information, please contact: digital-earth@ai.sri.com.
Last updated: Friday, 29-Nov-2002 14:55:15 PST.