PE&RS April 2001

Cover Image

The cover features hyperspectral remote sensing over the Kansas Ecological Reserves (KER) and Kansas River area near Lawrence, Kansas. The data are being processed and analyzed by staff at the Kansas Applied Remote Sensing Program and NASA Great Plains RESAC as part of their continuing research into the dynamics of Great Plains grasslands. Left: HyMap™ hyperspectral image, acquired on October 18, 2000. The HyMap™ instrument measures spectral properties for 128 bands in the 0.44 - 2.5 Fm region of the electromagnetic spectrum. The pixel size for this image is approximately 9 m. Center: HyMap™ false-color composite, detailing a portion of KER. Shown are a series of managed grassland plots, experimental ponds, and the Kansas Biologic Succession Facility in the upper left and right of the image, and deciduous forests on the Fitch Natural History Reservation in the lower half of the image. Upper Right: Derived spectral reflectance curve for a managed native grassland plot on the reserve. Bottom Right: Derived spectral reflectance curve for an agricultural plot, characterized by crop residue and bare soil, near the Reserve.

For information on how these data are being used to support grassland research, see the “Highlight Article” in this issue of PE&RS.

Highlight Article

414 Grasslands Across Time and Scale: A  Remote Sensing Perspective
Kevin P. Price, Theresa J. Crooks, and Edward A. Martinko

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

449 Development of a Robust Algorithm for Transformation of a 3D Object Point onto  a 2D Image Point for Linear Pushbroom Imagery
Taejung Kim, Dongseok Shin, and Young-Ran Lee

The algorithm solves the transformation iteratively with an initial estimate of the 2D image point; however, it does not require sophisticated procedures to determine a “good” initial estimate and it always converges to the correct solution. 

453 Image Matching Based on Tracking Matching Paths in the Similarity Space
Xueliang Mei, Peng Gong, and Greg S. Beging

The feasibility of implementing surface continuity and ordering constraints by tracking connected local peak points in the space of matching similarity is explored. 

461 Harmonic Analysis of Time-Series AVHRR NDVI Data
Mark E. Jakubauskas, David R. Legates, and Jude H. Kastens

Harmonic analysis of a one-year time series of NOAA AVHRR NDVI biweekly composite data was used to characterize seasonal changes in land use and land cover in southwest Kansas. 

471 Zoning Land for Agricultural Protection by the Integration of Remote Sensing, GIS, and Cellular Automata
Xia Li and Anthony Gar-On Yeh

The proposed method can help to generate land-use zoning by quantitatively taking both land suitability and geometric factors into account. 

479 Incidence Angle Correction of AirSAR Data to Facilitate Land-Cover Classification
Carl H. Menges, Greg J.E. Hill, Waqar Ahman, and Jakob J. van Zyl

Three image-based histogram equalization methods are proposed and evaluated for the correction of incidence angle effects in AirSAR data of a coastal tropical savanna landscape in Australia’s Northern Territory.  

491 Mapping Gold-Bearing Massive Sulfide Deposits in the Neoproterozoic Allaqi Suture, Southeast Egypt with Landsat TM and SIR-C/X SAR Images
Talatt M. Ramadan, Mohamed G. Abdelsalam, and Robert J. Stern

Analysis of Landsat TM images with supervised classification techniques using the Umm Garaiat alteration zone as the training site helped identify previously unknown alteration zones at Wadi Marahiq. 

499 Introducing New Indices for Accuracy Evaluation of Classified Images Representing Semi-Natural Woodland Environments
Sotirios Koukoulas and George Alan Blackburn

The Classification Success Index (CSI), The Individual Classification Success Index (ICSI), and the Group Clasification Success Index (GCSI) were found to offer considerable improvement over existing approaches. 

511 Contour Smoothing by an Eclectic Procedure
Albert H.J. Christensen

A procedure that smoothes TIN contours by means of quadratic parabolas, avoiding the crossing of contours and minimizing the violations to the linear model embodied in the TIN, is described. 

Announcements
432 Digital Elevation Model Specialty Conference
498 18th Biennial Workshop on Color Photography & Videography in Resource Assessment
519 Call For Posters — Challenges in Geospatial Analysis, Integration and Visualization

Columns & Updates
421 Softcopy
427 Grids & Datums — Niue
434 Headquarters News
437 Industry News
478 Reviewers List

Departments
435 New Members
445 Who’s Who in ASPRS
446 Sustaining Members
448 Index to Advertisers
490 Forthcoming Articles
518 Instructions to Authors
520 Calendar
521 Classifieds
523 Bookstore
527 Professional Directory
531 Membership Application

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