PE&RS February 2003

Cover Image

Sanborn provided this month’s cover image of South Manhattan, New York. It is an oblique view of a three-dimensional digital elevation model that has been draped with a digital orthophoto image. Sanborn developed this image using its METROTM “true” orthophoto technology, which uses a highly detailed 3-D elevation model that includes both ground and elevated structures like buildings and bridges. To create conventional digital orthophoto imagery, aerial photography is rectified using a digital elevation model of the ground only. This means elevated structures, like buildings and bridges, distort radially outward from the photo center and obstruct roads, utilities, and other ground features that otherwise would be visible in the imagery. True orthophoto technologies like METROTM eliminate this problem by rectifying bridge decks and building rooftops to their true horizontal position. The surrounding terrain is then readily visible in the orthophoto image. Sanborn has developed 3-D building models and true orthophoto imagery for several large urban areas throughout the United States. In an urban environment, these datasets can be a valuable source for accurate modeling and interactive editing in a 3-D environment.

For more information, visit www.sanborn.com. Contact information: David Brostuen, Vice President, 719-593-0093, dbrostuen@sanborn.com

Highlight Article

114 The Power of Three-Dimensional Data in a Geographic Information System
Krysia Sapeta

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

133 Retrieving Urban Objects Using a Wavelet Transform Approach
Ling Bian

The Harr wavelet transform is used to represent edge information for the retrieval of traditional industrial complexes from digital aerial photographs in an urban area.

143 Class-Guided Building Extraction from Ikonos Imagery
D. Scott Lee, Jie Shan, and James S. Bethel

About 64.4 percent of the buildings can be automatically extracted and squared with a satisfactory accuracy by a classification-guided approach using Ikonos multispectral and panchromatic imagery.

151 Right-Angle Building Hypothesis Generation in Regularized Urban Areas by Pose Clustering
Arie Croitoru and Yerach Doytsher

Because the hypothesis generation scheme employed must be robust, as well as efficient, a voting scheme inspired by pose clustering for generating building location hypothesis, using a single aerial image, is introduced and analyzed.

171 Semiautomated Building Extraction Based on CSG Model-Image Fitting
Yi-Hsing Tseng and Sendo Wang

A building extraction method based on semiautomatic fitting of Constructive Solid Geometry (CSG) primitives to multiple aerial images in order to acquire precise, reliable, and complete 3D data for buildings is proposed.

181 Robust Reconstruction of Building Models from Three-Dimensional Line Segments
Jiann-Yeou Rau and Liang-Chien Chen

The experimental results indicate that the proposed method can soundly rebuild the topology from 3D line segments and reconstruct building models with up to a 98 percent success rate.

189 Automatic Matching and Three-Dimensional Reconstruction of Free-Form Linear Features from Stereo Images
Ayman F. Habib, Young-ran Lee, and Michel Morgan

The Modified Iterated Hough Transform (MIHT) to automatically solve for the relative orientation parameters and the correspondence between conjugate entities in a stereo pair is introduced.

Announcements
116 ASPRS 2003 Annual Conference
121 Call for Papers — Terrain Data: Applications and Visualization — Making the Connection
141 PE&RS Special Call for Papers — Advances in Systems for Spatial Data Processing, Analysis and Representation
169 PE&RS Special Issue Call for Papers — Modeling Uncertainty in Geo-Spatial Data and Analysis

Columns & Updates
117 Grids & Datums — The Netherlands
125 Headquarters News
126 Industry News

Departments
125 New Member List
128 Who’s Who in ASPRS
129 New Sustaining Members
130 Sustaining Members
132 Advertiser Index
142 Instructions to Authors
170 Forthcoming Articles
198 Calendar
199 Classifieds
200 Bookstore
204 Professional Directory
207 Membership Application

Top

Home