PE&RS July 2005

Cover Image

The cover images, acquired by the Indian Remote Sensing™ (IRS) RESOURCESAT-1 satellite, feature the South Carolina coastal plane in the southeast region of the United States. The Indian Space Research Organization (ISRO) launched the satellite into an 817 km polar sunsynchronous orbit on 17 October 2003. RESOURCESAT-1 imagery (exclusive of India) and ground station access are offered through Space Imaging.

Three sensors provide broad spectral resolution: the Advanced Wide-Field Sensor (AWiFs) with 56-meter spatial resolution (740 km combined swath) operating three bands in the Visible and Near Infrared (VNIR) and one band in Short-Wave Infrared (SWIR); Linear Imaging Self-Scanner or LISS-III ( top inset) at 23.5-meter spatial resolution (141 km swath), using the VNIR and SWIR bands; and LISS-IV with 5.8-meter resolution (23.5 km swath) using three bands in VNIR ( bottom inset).

RESOURCESAT-1 imagery serves a number of markets, including mapping, land and water resource management, and agriculture. The cover images show lush vegetation as false-color red highlights, the predominant agricultural use in the Florence, South Carolina region known for high-yield tobacco crops.

For more information on RESOURCESAT-1 imagery and Space Imaging’s other IRS products, please visit www.spaceimaging.com/products/irs.

Highlight Article
771 Filling in the Gaps with Complementary Technologies (Adobe PDF 594Kb)
Ron Roth

Feature Article
777 The LAS 1.1 Standard (Adobe PDF 198Kb)
Lewis Graham

Columns & Updates
783 Direct Georeferencing — Airborne GPS Augmentation Alternatives — Part II Satellite-based Correction Services (Adobe PDF 114Kb)
785 Grids and Datums — Republic of El Salvador (Adobe PDF 80Kb)
787 ASPRS Certification — What’s in it for Me? Part II (Adobe PDF 1.43Mb)
791 In Memoriam — William R. Alder and Robert N. Colwell
793 Headquarters News — ASPRS Releases Update to LAS Lidar Data Exchange Format Standard (Adobe PDF 174Kb)
795 Industry News

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

805 Effects of Terrain Morphology, Sampling Density, and Interpolation Methods on Grid DEM Accuracy
Fernando J. Aguilar, Francisco Agüera, Manuel A. Aguilar, and Fernando Carvajal

Effects of terrain morphology, sampling density, and scattered data interpolation methods on the accuracy of interpolated Grid Elevation Models.

817 An Evaluation of Lidar-derived Elevation and Terrain Slope in Leaf-off Conditions
Michael E. Hodgson, John Jensen, George Raber, Jason Tullis, Bruce A. Davis, Gary Thompson, and Karen Schuckman

Surface elevations and slope derived from lidar data in seven land-cover classes were validated using survey grade elevations.

825 Structural Damage Assessments from Ikonos Data Using Change Detection, Object-Oriented Segmentation, and Classification Techniques
D.H.A. Al-Khudhairy, I. Caravaggi, and S. Giada

Classical change detection methods, object-oriented image segmentation, and classification techniques are applied to investigate effectiveness for identifying post-disaster, structurally damaged zones using very high resolution satellite imagery.

839 Sub-pixel Target Mapping from Soft-classified, Remotely Sensed Imagery
Peter M. Atkinson

A simple and efficient pixel-swapping algorithm for increasing the spatial resolution of land-cover classification from remotely sensed imagery.

847 DTM Generation and Building Detection from Lidar Data
Ruijin Ma and Will Meyer

Describing a method to perform DTM generation and building detection from lidar range data through a segmentation process, and a method to conduct boundary regularization.

855 A Split-and-Merge Technique for Automated Reconstruction of Roof Planes
Kourosh Khoshelham and Zhilin Li

A new technique for automated reconstruction of planar building roofs by fusion of image and height data.

863 Theoretical Analysis of the Iterative Photogrammetric Method to Determining Ground Coordinates from Photo Coordinates and a DEM
Yongwei Sheng

The convergence condition and the convergence speed of the iterative Photogrammetric method to the single-ray back-projection problem is analyzed, and validates the theory using a synthetic surfacecontaining a variety of slope conditions.

Announcements
782 PE&RS Special Issue Call for Papers —“Cloud-prone and Rainy areas Remote Sensing (CARRS)”
784 PE&RS Special Issue Call for Papers — “Web and Wireless GIS”
786 PE&RS Special Issue Call for Papers —“Mapping from High Resolution Satellite Imagery”

Departments
794 New Member List
800 Calendar
801 Who’s Who in ASPRS
802 Sustaining Member
804 Advertiser Index
824 Instructions to Authors
838 Forthcoming Articles
872 Classifieds
873 Bookstore
877 Professional Directory
880 Membership Application