PE&RS February 2004

Cover Image
Working in cooperation with the Grand Canyon Monitoring and Research Station, theU.S. Geological Survey tasked Photo Science, Inc. (PSI) to collect high-resolution color aerial photography of 11 sites throughout the Grand Canyon via its Cartographic Services Contract II contract (a contract acquired through PSI’s recent acquisition of Greenhorne & O’Mara’s Geographic Science Division). The aerial photography was used to create accurate photogrammetric data by PSI to support ongoing Colorado River Ecosystem streamflow and sediment resource research. Mission planning played a key factor in the success of this complex project as the data needed to be collected in conjunction with a water release in the Colorado River, occurring for only one day during the Memorial Day weekend. Additionally, due to the inaccessible nature of the terrain and the difficulty in setting ground control, the project demanded acquisition using airborne GPS (ABGPS) and Inertial Measurement Unit (IMU). Tied together with the high-resolution and accuracy requirements to successfully capture the data, the aircraft’s flight profile necessitated that the aircraft fly at an altitude below the canyon walls as well as sampling the ABGPS/IMU data at twice the normal rate to maintain constant “lock” with the ground stations and ensure positional accuracy.

For more information, please contact Scott Van Dermark at (301)345-4488 or svandermark@photoscience.com.

Guest Editorial

165 Current Status of ISPRS Commission II: An Introduction (Adobe Acrobat 389Kb)
Jun Chen and Zhilin Li

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

185 Some Requirements for Geographic Information Systems: A Photogrammetric Point of View
Christian Heipke

Some requirements which an ideal geographic information system (GIS) must meet to cope with the challenges of the future.

197 From Mobile Mapping to Telegeoinformatics: Paradigm Shift in Geospatial Data Acquisition, Processing, and Management
Dorota A. Grejner-Brzezinska, Ron Li, Norbert Haala, and Charles Toth

The mobile mapping systems paradigm has shifted from the post-mission to near-real-time systems due to the technological advances in positioning and imaging sensors, combined with the explosion in wireless mobile communication systems.

211 Automated Identification of Man-Made Textural Features on Satellite Imagery by Bayesian Networks
Ahmet B. Orun

A classification technique which distinguishes between man-made and natural textural features on satellite imagery by the use of textural analyses and Bayesian networks is introduced.

217 System Integration of GIS and a Rule-Based Expert System for Urban Mapping
Jinmu Choi and E. Lynn Usery

A rule-based expert system in artificial intelligence techniques is integrated with GIS using an interactive question-and-answer sequence for urban mapping from aerial photographs.

225 Designing a GIS-Based CSCW System for Development Control with an Event-Driven Approach
Jun Chen, Jie Jiang, and Anthony Gar-On Yeh

This approach to model both the structural and behavioral aspects of the development control process by integrated representation of agents, events, and states as well as their relations is presented.

235 Information Fusion for Computational Assessment of Air Quality and Health Effects
Dimosthenis A. Sarigiannis, Nikolaos A. Soulakellis, and Nicolas I. Sifakis

The functional layout, operational features, and characteristic results of the ICAROS NET information fusion method are presented.

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170 ASPRS Annual Conference — ...Mountains of Data — Peak Decisions...
224 Call for Papers — PE&RS Special Issue on Mapping Mars
233 Call for Papers — PE&RS Special Issue on Mobile Mapping Systems

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