PE&RS October 2001

Cover Image

This month's cover showcases a sample of Airborne 1 Corporation's lidar data, collected over Los Angeles' University of Southern California campus and Exposition Park. The data was collected with a 2' x and y spot spacing and delivered with vertical accuracies of better than 15cm at 2' sigma.

Bottom: Bald earth lidar DEM with complete vegetation and feature removal. Middle: "All-Shots" color-coded by elevation with no vegetation removed. Top: Same as "middle" with lidar intensity raster draped on top. All data was processed by the team of lidar mapping specialists at Airborne 1 Corporation in Los Angeles, California. Cover images by Bryant Bertrand.

Airborne 1 is bringing lidar technology and expertise to the photogrammetry, survey and mapping communities. The company is conducting a "Roadshow" to bring cost-effective lidar capabilities to smaller projects nationwide. For more information about lidar please comtact Airborne 1 Corporation at 310-342-7100, visit their website at http://www.airborne1.com or send e-mail to info@airborne1.com.

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

1133 Detection of Regularly Spaced Targets in Small-Footprint LIDAR Data: Research Issues for Consideration
David L. Evans, Scott D. Roberts, John W. McCombs, and Richard L. Harrington

Small-footprint LIDAR systems do not adequately sample tree tops under typical LIDAR mission conditions, and these systems sometimes fail to give ground returns in areas of dense vegetation canopy conditions.

1137 Rule-Based Classification Systems Using Classification and Regression Tree (CART) Analysis
Rick L. Lawrence and Andrea Wright

Rule-based classifications incorporating spectral and ancillary data were readily developed using Classification and Regression Tree analysis, which is accessible through widely available statistical software.

1143 A Robust Method for Registering Ground-Based Laser Range Images of Urban Outdoor Objects
Huijing Zhao and Ryosuke Shibasaki

A method of registering multiple ground-based laser range images is proposed for the purpose of reconstructing 3D urban outdoor objects, and the efficiency and accuracy is examined through an experiment of registering 42 outdoor laser range images.

1155 Landsat TM-Based Forest Area Estimation Using Iterative Guided Spectral Class Rejection
Jared P. Wayman, Randolph H. Wynne, John A. Scrivani, and Gregory A. Reams

Forest area estimates from two Landsat TM-based classifications, MRLC and a new hybrid technique called Iterative Guided Spectral Class Rejection, are compared with the USDA Forest Service Forest Inventory and Analysis forest area estimates obtained using the traditional aerial-photography-based method.

1167 The Utility of IRS-1C LISS-III and PAN-Merged Data for Mapping Salt-Affected Soils
R.S. Dwivedi, K.V. Ramana, S.S. Thammappa, and A.N. Singh

The potential of high spatial resolution Panchromatic (PAN) sensor data and the Linear Imaging Self-scanning Sensor (LISS-III) data from the Indian Remote Sensing Satellite (IRS-1C) for detection and delinetion of salt-affected soils in a portion of the indo-Gangetic alluvial plains of northern India is evaluated.

1177 Irrigated Crop Area Estimation Using Landsat TM Imagery in La Mancha, Spain
Cecilia Martínez Beltrán and Alfonso Calera Belmonte

The discrimination procedure is based on the different crop spectral responses through time according to their phenological evolution.

1185 Assessing Raster Representation Accuracy Using a Scale Factor Model
Jeong Chang Seong and E. Lynn Usery

A scale factor model of projection accuracy is developed for determining categorical pixel-value errors in the projection of raster datasets, and is applied to specific projections.

Announcements
1111 GeoTech 2001: The Mapping, Imaging, GPS and GIS Users Conference
1127 Measuring the Earth — Digital Elevation Technologies
1136 Scholarships and Awards
1191 CALL FOR Papers: Characterizing and Modeling Landscape Dynamics
Cover 3 Measuring the Earth — Digital Elevation Technologies

Columns & Updates
1105 Direct Georeferencing
1113 Grids & Datums — Democratic and Popular Republic of Algeria
1117 In Memoriam
1119 Headquarters News
1121 Industry News

Departments
1120 New Members
1129 Who’s Who in ASPRS
1129 Sustaining Members
1132 Index to Advertisers
1142 Forthcoming Articles
1154 Instructions to Authors
1176 Calendar
1192 Classifieds
1195 Bookstore
1199 Professional Directory
1203 Membership Application

Top

Home