National SDTS Implementors' Workshop Results

SDTS Workshop Results - Technical Session

Speakers: David Greenlee, USGS, Sioux Falls, SD and
Tom Hampton, USGS, Denver, CO

Topic: Raster Profile with BIIF Extensions

Email: greenlee@usgs.gov, tlhampton@usgs.gov

The session centered on the topic of a Raster Profile for use with SDTS. Tom Hampton talked about the history of the development of the Raster Profile and work the Raster Convergence Working Group (RCWG) did in comparing existing standards such as the National Image Transfer Standard and the Basic Image Interchange Format. Tom also outlined the goals of the RCWG in this effort, the progress of the convergence activities associated with this task and some of the divergences of this profile with SDTS. Other factors such at time and cost were mentioned and the presentation ended with a list of benefits to the raster data users community.

Dave Greenlee also talked about the progress of the Raster Profile in SDTS with specific emphasis on georeferencing and combining raster data such as DOQs and DEMs with vector data. Mentioned in the discussion were the existence of concerns with various data compression methods, and differences encountered in reprojecting raster data as opposed to reprojecting vector data especially for data producers that have data sets not requiring the rigorous georeferencing that is expected in an SDTS transfer.

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