PE&RS May 1999

Cover Image

This month’s cover image is courtesy of DAT/EM Systems International, a photogrammetric software developer based in Anchorage, Alaska. The image shows the area of Sitka, Alaska digitally collected using CAPTURE NT™. When it comes to GIS work, data capture is usually the most time consuming aspect of the process. That’s why it’s important to use the right tool, whether the final goal is a GIS or some other photogrammetric application. CAPTURE NT, the stereoplotter interface and data capture software from DAT/EM, allows geospatial information to be collected directly into AutoCAD® or MicroStation®. This CAD plug-in runs on the Windows® NT platform and interfaces to digital, analytical, and analog stereoplotters. Included with CAPTURE NT is DAT/EM MAP/EDITOR™ software which automates editing tasks to more easily get information into a finalized form. If so desired, data acquired through CAPTURE NT can be integrated into a GIS through the capabilities of either CAD package. AutoCAD and MicroStation, as well as CAPTURE NT, are fully GIS ready when coupled with AutoCAD Map or MicroStation Geographics.

Besides CAPTURE NT and MAP/EDITOR, DAT/EM also provides other photogrammetric tools, including a color superimposition package and SUMMIT PC™, a digital stereoplotter. The stereo model and vector data used to create the front cover image were provided to DAT/EM Systems International by AeroMap U.S.

For additional information, contact DAT/EM Systems International; 907-522-3681; 800-770-3681; sales@datem.com; www.datem.com.

Editor’s Note: The computer screens represented on this cover do not accurately reflect the actual product supplied by DAT/EM, as all proprietary names/symbols have been removed by ASPRS. It is the ASPRS policy that no commercial logos and/or advertising be displayed on the front cover of PE&RS.

Highlight Article

524 A Vision for a Global Geospatial Information Network (GGIN) (Adobe PDF 2Mb)
Gary W. Fuller

528 The Digital Earth: Understanding Our Planet in the 21^st Century (Adobe PDF 846Kb)
Vice President Al Gore

540 Earth Observing Data Systems in the Internet Era (Adobe PDF 1.74Mb)
Menas Kafatos, Tarek El-Ghazawi, X. Sean Wang, and Ruixin Yang

Column

564 The Impact of Interoperable Geoprocessing (Adobe PDF 753Kb)
Lance McKee

Peer-Reviewed Articles (Click the linked titles to see the full abstract)

567 Interoperable Web-Based Services for Digital Orthophoto Imagery
John D. Evans

An online service for disseminating digital geospatial imagery makes such data accessible to a wide audience by automating image selection, extraction, mosaicking, and georeferencing.

573 Interoperable Spatial Data Catalogs
Douglas Nebert

Industry consensus is approaching regarding a standard approach for discovery of spatial information on the Web.

577 Defining Standard Interfaces for Image Exploitation Services
Arliss Whiteside

Open specifications are being developed for a set of software interfaces that enable diverse geoprocessing systems to access each other’s image exploitation functions and image data.

585 The OpenGIS Data Model
John R. Herring

The theoretical basis for the Open GIS Consortium’s program to develop a comprehensive set of platform-independent common software interfaces is described.

589 Dynamic Monitoring with Video Systems
C.K. Lee and W. Faig

This study suggests that home video cameras, a PC, and photogrammetric principles are promising tools for monitoring moving objects and vibrations as well as other time dependent situations.

597 Automatic Extraction of Road Signs from Terrestrial Color Imagery
Ayman F. Habib, Robert Uebbing, and Kurt Novak

The main premise is to utilize prior knowledge about the color and shape of road signs to facilitate both hypothesis generation and verification stages of the recognition process.

603 Evaluation of NDVI for Monitoring Live Moisture in Three Vegetation Types of the Western U.S.
Colin C. Hardy and Robert E. Burgan

Changes in field-measured live vegetation moisture were compared with changes in high resolution (0.5 m2) NDVI data acquired four times from May to October over meadow grass, sagebrush, and an open-conifer stand.

611 Remote Sensing of Urban/Suburban Infrastructure and Socio-Economic Attributes
John R. Jensen and Dave C. Cowen

Large-scale metric aerial photography or digital camera imagery with spatial resolutions ranging from 0.25 to 1m will still be required to satisfy several important urban/suburban information requirements.

Announcements
538 April Cover - Correction
538 Resource ‘99 - Correction
563 Certification List - Update
576 Pecora 14/Land Satellite Information III Call for Papers
584 Call for Papers: African Applications
602 Call for Nominations - 1999 William T. Pecora Award

Columns & Updates
549 Grids & Datums-Ecuador
551 Photogrammetry
553 Industry News

Departments
557 Who’s Who in ASPRS
559 Sustaining Members
561 New Members
566 Index to Advertisers
572 Instructions to Authors
575 Forthcoming Articles
625 Calendar
626 Classifieds
629 Bookstore
633 Professional Directory
637 Membership Application

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