PE&RS March 2002

Cover Image
This months' cover was generated using a LiDAR-derived digital surface model (DSM) created by Merrick & Company, of Aurora Colorado. The images are of Denver's "Mile High" (old) and "Invesco" Mile High (new) football stadiums.

The first image is a LiDAR point cloud and TIN rendering using Merrick's high speed viewing platform. The second image and also the background image uses the ChromaDepth rendering process to allow users to view the DSM in 3D. The third image was taken from a 6-inch pixel digital color camera image draped on a 1-meter LiDAR DSM. The last image was generated using automated vector extraction.

The data were acquired utilizing Merrick's integrated LiDAR and 4000- by-4000 pixel digital color/IR camera system. The sensor is an LH Systems ALS 40. All data were simultaneously collected and processed as a digital beginning to end process, thus eliminating the use of traditional aerial film products. The data products were generated as part of Merrick's robust LiDAR research and development program for commercial and government clients using Merrick's proprietary image and surface model software and processes. Merrick & Company provides LiDAR, photogrammetry, digital imagery and GIS application services throughout North and South America.

For information, contact Gary D. Outlaw at 800-544-1714, ext. 4126, gary.outlaw@merrick.com, or www.merrick.com/gis.

To see the separate cover images in their full size go to cover.

Highlight Article

198 Promoting Sustainable Development with Advanced Geospatial Technologies
William G. Brooner

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

225 Optimized Resource Allocation for GIS-Based Model Implementation
Michele Crosetto, Francesco Crosetto, and Stefano Tarantola

A procedure based on uncertainty and sensitivity analysis to support the implementation of new GIS-based models is described.

233 Detection of Areas Associated with Flood and Erosion Caused by a Heavy Rainfall Using Multitemporal Landsat TM Data
Amod Sagar Dhakal, Takaaki Amada, Masamu Aniya, and Rishi Ram Sharma

Four change-detection techniques were compared for their effectiveness including (1) Spectral Image Differencing (SID), (2) Tasseled Cap Brightness Image Differencing (TCBID), (3) Principal Component Analysis (PCA), and (4) Spectral Change Vector Analysis (SCVA).

241 Applying GIS for Developing Regional Forest Agreements in Australia
Adrian L. Bugg, Ray D. Spencer, and Alex Lee

Application of GIS to a major forest assessment and planning program in Australia stimulated development of methods and tools to support decision making.

251 Mapping Chinese Tallow with Color-Infrared Photography
Elijah W. Ramsey III, Gene A. Nelson, Sijan K. Sapkota, Eric B. Seeger, and Kristine D. Martella

High spatial (£ 1 m) but low spectral resolution remote sensing data can be used for mapping of Chinese tallow trees in dominant environments found in coastal and adjacent upland landscapes.

257 Visualizing Topography by Openness: A New Application of Image Processing to Digital Elevation Models
Ryuzo Yokoyama, Michio Shirasawa, and Richard J. Pike

Maps of positive and negative openness, computed at a DEM point from zenith or nadir angles constrained by neighboring points, aid topographic interpretation by emphasizing ridges, drainages, and convexities and concavities.

267 A Framework for Automatic Recognition of Spatial Features from Mobile Mapping Imagery
Zhuowen Tu and Rongxing Li

An example of traffic-light recognition from mobile mapping images is given in detail.
 

Announcements
250 2001 PE&RS Review List
256 ASPRS-ACSM 2002 Conference
266 Integrating Remote Sensing at the Global, Regional, and Local Scale Conference
276 Call for Papers - Linear Feature Extraction From Remote Sensing Data For Road Centerline Delineation And Revision

Columns & Updates
207 Direct Georeferencing (Adobe .pdf format 95kb)
211 Grids & Datums - Republic of Suriname
213 Headquarters News
218 Industry News

Departments
212 Index to Advertisers
221 Who's Who in ASPRS
223 Sustaining Members
240 Instructions to Authors
255 Forthcoming Articles
277 Classifieds
279 Calendar
280 Bookstore
284 Professional Directory
287 Membership Application

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