Accession Number:

ADA237105

Title:

An Automated Software System for Updating Digital Terrain Databases from All-Source Imagery. Phase 1

Descriptive Note:

Contractor rept.,

Corporate Author:

VEXCEL CORP BOULDER CO

Report Date:

1991-02-01

Pagination or Media Count:

130.0

Abstract:

VEXCEL Corporations Phase l SBIR research effort for U.S. Armys Engineer Topographic Laboratories concentrated on the feasibility of creating the primary tools for the prototype development in Phase II of a digital change detection work station. This system in intended to be capable of detecting long-term 6 months to 1 year andor seasonal changes from all-source imagery. The system is intended to be hosted on a SUN-4 platform operating under a UNIXC software environment. The emphasis of the present Phase l effort was on the two major technical challenges for the development of such a system precision image registration and robust change detection and analysis. Most of this effort was directed toward automated SAR-optical image registration and automated change cueing experiments. Change cueing is an initial step in change detection for identifying regions where possible change events may have occurred. The automated registration and cueing efforts were successful over the data sets tested. These data sets did not contain appreciable terrain-induced distortions. Theoretical improvements for algorithms are recommended for addressing such terrain-induced registration complications in Phase II. Recommendations are also made for the inclusion of interactive capabilities to supplement the automated registration techniques.

Subject Categories:

  • Cartography and Aerial Photography
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE