PE&RS May 2005

Cover Image

Leica Geosystems GIS & Mapping provided this month’s cover image, demonstrating the capabilities of the Leica ADS40 Airborne Digital Sensor. Captured by EarthData on behalf of the Southwest Florida Water Management District and the U.S. Geological Survey, this infrared image depicts the west coast of Florida near Port Richey. This imagery is utilized by Southwest Florida Water Management District in its efforts to manage water-related resources. Meeting water needs while protecting the natural systems that provide its water supply, the agency oversees flood control, regulatory programs, water conservation, education, and supportive data collection and analysis efforts.

The Leica ADS40 delivers all digital, 12-bit data with the swath width and coverage area of a traditional film camera. The spatial resolution of the ADS40 enables users to achieve higher accuracy in large-scale mapping applications, extract more detailed information, and digitally equal black& white film resolution. The sensor’s innovative construction allows for the simultaneous acquisition of seven bands of information: three panchromatic CCD lines capture information in views forward, nadir and backward from the aircraft, while four multispectral lines capture data in the near-infrared band.

For more information, contact Leica Geosystems GIS & Mapping, LLC. Phone: +1 404.248.9000, e-mail: info@gis.leica-geosystems.com, Web: gis.leica-geosystems.com.

Columns & Updates
545 Direct Georeferencing — Airborne GPS Augmentation Alternatives (Adobe PDF 306Kb)
547 Grids and Datums — New Zealand (Adobe PDF 125Kb)
550 In Memoriam — Jon Stanton Beazley
553 Headquarters News — ASPRS Proposed Bylaws Revision, ASPRS Membership Marketing Survey, ASPRS Holds Very Successful 2005 Annual Conference, ASPRS 2005 Awards (Adobe PDF 356Kb)
561 Industry News

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

585 A Robust Technique for Precise Registration of Radar and Optical Satellite Images
Tai D. Hong and Robert A. Schowengerdt

A new method for automatically registering two dissimilar images, such as, a radar image and a optical image with high accuracy.

595 Agricultural Applications of High-Resolution Digital Multispectral Imagery:Evaluating Within-Field Spatial Variability of Canola (Brassica napus) in Western Australia
Georgina Warren and Graciela Metternicht

By exploring the relationship of DMSI and derived image transformation techniques with canola attributes, such as, crop density and LAI, it is possible to assess whether this is an appropriate remote sensing technology to incorporate into the infrastructure of image-based remote sensing for site-specific crop management.

603 Field Determination of Optimal Dates for the Discrimination of Invasive Wetland Plant Species Using Derivative Spectral Analysis
Magdeline Laba, Fuan Tsai, Danielle Ogurcak, Stephen Smith, and Milo E. Richmond

Optimum dates for spectral discrimination between two invasive wetland plant species, purple looseleaf and reed, and one indigenous plant species, cattail, were determined by using derivative spectral analysis.

613 Remote Sensing of Urban Heat Islands by Day and Night
Janet Nichol

A comparison of daytime and night time thermal images for urban heat island analysis at micro- and meso-scales.

623 Implementation of an Equal-area Gridding Method for Global-scale Image Archiving
Jeong Chang Seong

A method of constructing global scale image databases using equal area facets and an extended header structure for ef fective referencing of facets using latitude and longitude.

629 Influence of System Calibration on Direct Sensor Orientation
Naci Yastikli and Karsten Jacobsen

The influence of the system calibration with GPS and IMU is presented as it affects direct sensor orientation.

Announcements
551 PE&RS Special Issue Call for Papers —“Mapping from High Resolution Satellite Imagery”
562 PE&RS Special Issue Call for Papers — “The Shuttle Radar Topography Mission– Data Validation and Applications”
564 Pecora 16 — Global Priorities in Land Remote Sensing
628 Call for Papers — The 20th Biennial Workshop on Aerial Photography, Videography,and High Resolution Digital Imagery for Resource Assessment

Departments
553 Region of the Month
554 New Member List
565 Who’s Who in ASPRS
566 Sustaining Members
568 New Sustaining Member
568 Advertiser Index
569 Bookstore
594 Instructions to Authors
612 Forthcoming Articles
622 Calendar
634 Classifieds
636 Professional Directory
640 Membership Application