PE&RS December 2007

This month’s cover, provided by Bohannan Huston Inc., shows the high resolution orthophotography data that is used by the Dallas/Fort Worth Texas Departments of Transportation (TxDOT) to support the planning and asset inventory of their districts. These image provide an example of the level of detail, in six inch resolution, that the TxDOT officials of the Dallas/Fort Worth TxDOT Districts are utilizing within their CAD and GIS systems. This massive project covers 17 counties, and 13,716 square miles of aerial photography collected with the Intergraph Z/I Imaging DMC® (Digital Mapping Camera). Three of these sensors were utilized in the digital aerial photography acquisition phase by subcontractors Photo Science and 3001 Inc. Bohannan Huston Inc. uses the Intergraph Photogrammetric suite for the post-processing of DMC imagery. The final orthophotography dataset will be used by TxDOT, and the local government agencies within the North Central Texas Council of Governments (NCTCOG). For more information on the DMC and Intergraph’s photogrammetric workflow, visit http://www.intergraph.com/gdca/earthimaging.asp.

Higlight Article
1301 Bohannan Huston Deploys Four Digital Mapping Cameras in Massive Texas Acquisition Project (Adobe PDF5.58Mb)
Dennis Sandin

Columns & Updates
1305 Grids and Datums — Republic of Paraguay (Adobe PDF 142Kb)

1307 Mapping Matters

1309 In My Opinion — Observations
on the Report “Hurricane Katrina: A Nation Still Unprepared” (Adobe PDF 398Kb)

1311 Book Review — Urban Remote Sensing (Adobe PDF277Kb)

1313 Headquarters News — ASPRS Joins the Geospatial Intelligence Standards Working Group;
ASPRS 2008 Vice Presidential Candidates (Adobe PDF 51Kb )

1314 Industry News

Departments
1310 Certification List
1312 New Member List
1315 Region of Month
1316 Who’s Who in ASPRS
1317 Sustaining Members
1319 Instructions to Authors
1354 Forthcoming Articles
1366 Calendar
1380 ASPRS Member Champions (Adobe PDF 78Kb)
1457 Classifieds
1458 Professional Directory (Adobe PDF 1.32Mb)
1459 Advertiser Index
1460 Membership Application

2007 PE&RS Index
1425 Subject Index (Adobe PDF 270Kb)
1447 Author Index (Adobe PDF 107Kb)

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

1321 Geometric Accuracy Assessment of QuickBird Basic Imagery Using Different Operational Approaches
Manuel A. Aguilar, Fernando J. Aguilar, Francisco Agüera, and Jaime A. Sánchez

Geometric correction using rational functions and rigorous sensor models, and orthorectification with different DEMs of the QuickBird basic imagery for mapping applications.

1333 Assessment of SRTM, ICESat, and Survey Control Monument Elevations in Canada
Alexander Braun and Georgia Fotopoulos

An evaluation of the differences between SRTM, ICESat, and survey control monument elevations in Canada and the effects of temporal changes, such as snow and vegetation cover on these height data sets.

1343 Consequences of Land-cover Misclassification in Models of Impervious Surface
Gerard McMahon

An assessment of the effects of land-cover misclassification on models that use the National Land Cover Data (NLCD) to predict impervious surface by evaluating the consequences on model predictions of adjusting land-cover within a watershed to reflect uncertainty assessment information.

1355 Estimating Basal Area and Stem Volume for Individual Trees from Lidar Data
Qi Chen, Peng Gong, Dennis Baldocchi, and Yong Q. Tian

A new lidar metric for forest canopy geometric volume for estimating basal area and stem volume on individual trees is tested.

1367 A Theoretical Approach to Modeling the Accuracy Assessment of Digital Elevation Models
Fernando J. Aguilar, Francisco Agüera, and Manuel A. Aguilar

Development and validation of a theoretical model for estimating the degree of correctness to which the accuracy figures of a grid Digital Elevation Model have been estimated, measured as RMSE, depending on the number of check points used in the accuracy assessment process.

1381 Extraction of Urban Built-up Land Features from Landsat Imagery Using a Thematic-oriented Index Combination Technique
Hanqiu Xu

A new method to extract urban built-up land information from Landsat imagery based on three thematic indexes.

1393 Seasonal Sensitivity Analysis of Impervious Surface stimation with Satellite Imagery
Changshan Wu and Fei Yuan

A seasonal sensitivity analysis conducted for estimating impervious surface distribution using spectral mixture analysis and regression modeling.

1403 Employing Spatial Metrics in Urban Land-use/Landcover Mapping: Comparing the Getis and Geary Indices
Soe W. Myint, Elizabeth A. Wentz, and Sam J. Purkis

The effectiveness of Getis index (Gi) in comparison to a measure of spatial autocorrelation (Geary’s C) in classifying landuse / land-cover classes in a high resolution imagery and the impact of distance threshold used in Getis index with regards to the classification accuracy.

1417 Designing and Implementing Software Components for an Automated Mapping System
Jae-Hong Yom and Jane Drummond

An examination of the usefulness of Object-oriented Programming (OOP) and the Unified Modeling Language (UML) in implementing new automated mapping tools as they emerge.