GIS Tech News (#105)

16 Mar, 2011 By: Cadalyst Staff

Austrian Agency Automates Sound Propagation Modeling

Urban planners process volumes of optical, laser-scanning, and GIS data using INPHO and eCognition software.

By Todd Taylor

The cost and time associated with manually assembling and processing detailed image data is significant. Integrating three-dimensional data, such as that generated by aerial laser scanning, vastly improves the value and accuracy of the information product produced; however, this data is practically impossible to manually prepare and analyze. Only by using software to automate data handling and analysis is it feasible for organizations to tackle land-use modeling and mapping projects for large areas. GEOinfo did exactly this when it adopted a process capable of automatically analyzing large volumes of data to deliver accurate and reproducible results in a standardized manner.

Upper left: RGB; upper right: nDSM; lower left: basic land cover; lower right: generalized results.

GEOinfo — the Department of Surveying and Geo Information of the State Government of Lower Austria — is the major provider of geographic data in the region. The department is structured into three areas: topographical survey, data collection, and data processing. GEOinfo's portfolio includes digital data and secondary products, such as maps and graphics, which are created on behalf of the state government.

Sound-wave propagation models for traffic noise have been generated over an area of more than 20,000 square kilometers in Austria using Trimble INPHO and eCognition software. The project detects and quantifies changes in forests, buildings, and water bodies using aerial laser scanning and orthophotos, and has been developed by the Government of Lower Austria as part of an urban planning initiative from the European Union. With measured accuracy ratings above 94%, the automated approach provides an information product that would be completely unviable and cost-prohibitive to create manually.

Handling Airborne Geospatial Data

In the GEOinfo project, automation of photogrammetric processes and digital terrain model (DTM) generation was essential due in part to the large data volume. Project personnel used INPHO, a photogrammetry and digital terrain modeling software suite, to manage and process GEOinfo's aerial laser scanning data over large areas. Read more »
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Todd Taylor is a senior marketing manager in Trimble's Geospatial division.

Mark Your Calendar: GIS Events

2011 Geospatial Solutions Conference
April 10–13, 2011
Dallas, Texas
This event from the Geospatial Information & Technology Association (GITA) will include eight half-day workshops, more than 70 technical sessions, an exhibit hall, an Open Source track, and forums with featured speakers. Read more

2011 Washington GIS Conference
May 9–11, 2011
Lynnwood, Washington
This conference will comprise half-day workshops, seminar tracks, and a keynote address by Jack Dangermond of ESRI. Read more

Cityworks 2011 User Conference
May 16–18, 2011
Saint George, Utah
This Azteca Systems event is a focal point for the Cityworks user community, including users and business partners. Event proceedings include Cityworks technical and application sessions, user case studies, a vendor exhibit hall, and the Cityworks Doctor's Office. Read more 

For a complete list of CAD meetings, conferences, training sessions, and more, check out our calendar of events on Are you hosting an event that you would like to include in our calendar? Submit details at least two weeks in advance to


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About the Author: Cadalyst Staff

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