Systems for data processing, anaylsis and representation

Allam, Mosaad; Plunkett, Gordon

Bibliographic data

Monograph

Persistent identifier:: 1067490280

Title:: Systems for data processing, anaylsis and representation

Sub title:: ISPRS Commission II Symposium : June 6 - 10, Ottawa, Canada

Scope:: 1 Online-Ressource (XX, 530 Seiten)

Year of publication:: 1994

Place of publication:: Ottawa

Publisher of the original:: The Surveys, Mapping and Remote Sensing, Natural Resources Canada

Identifier (digital):: 1067490280

Illustration:: Illustrationen

Signature of the source:: ZS 312(30,2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Allam, Mosaad; Plunkett, Gordon

Corporations:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Adapter:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Founder of work:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Other corporate:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: [Wednesday, June 8, 1994]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: [Session G-2 WG II/5 - Integrated Production Systems]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: The National Advanced Remote Sensing Applications Program, an Integrated System of Commercial Off-the-Shelf Components Gary Vanderhaven [...] Clifford W. Greve [...] K. Eric Anderson [...]

Document type:: Monograph

Structure type:: Chapter

ducts from > to a GIS e layers of a system as on a system stem could becoming nong earth it. d attribute hat are an AP system operations GIS in a capable of : d products tal imaging | allow the abilities in f the above te sensing tween the ronmental > mapping rigorous 1otography nerate the soft copy. 1e GIS for items have a capture analytical photogrammetric plotters. In most instances, data files from these data capturesystems are then exported into a GIS for further analysis and product finishing. On the other hand, the environmental and resource management communities usually rely on multispectral remote sensing systems, such as Landsat and SPOT, to derive their data. Because of the favorable geometry inherent in many of these systems, adjustment to the GIS coordinate system has typically been accomplished with relatively simple polynomial warping models, based upon common control points, with no rigorous modeling of the geometry of the sensor system. Data from these remote sensing systems are usually extracted directly from the soft copy images, either by multispectral feature classification methods, by digitizing the vector outlines, or by combinations of both methods. The interface to the GIS is typically interactive on a common workstation with the image processing software. After analyzing future remote sensing processing needs in the USGS and other U.S. Government civil agencies the USGS observed that the precieved boundaries between mapping and environmental remote sensing frequently overlapped in addressing current problems. Some of the more advanced remote sensing systems, such as SPOT, can look off nadir to a significant degree; therefore, the effects of relief displacement on the plotted position of features must be considered. This positioning requires mathematical rigor beyond the ability of the simple polynomial warping model. The National Aerial Photography Program (NAPP) provides a source for relatively high-resolution panchromatic and color infrared images that many users have found to be a useful complement to traditional remote sensing data. The prospect of the ready availability of digital orthophoto quadrangles (DOO) derived from NAPP imagery increases the need to be able to exploit all of these sources concurrently in a common workstation environment. The NARSAP is designed to provide an environment where personnel from various civil agencies, with help and guidance from USGS personnel, can use these advanced remote sensors when addressing their problems. These problems may include: disaster relief from such phenomena as volcanic eruptions, earthquakes, hurricanes, and floods; as well as scientific experiments on earth processes, land use and land cover determination, geologic structure, and stream mixing patterns; or monitoring of stream flood stages, erosion, wetlands loss, potential volcanic activity, land cover, and dam safety. This list is certainly not exhaustive. Because virtually all of the civil agencies have ongoing programs that use remote sensing and GIS’s, the NARSAP facility needed the capability to ingest information from these external systems and to transfer information back to these same external systems for further analysis. In particular, adherence to the Spatial Data Transfer Standard (FIPS 173) vector and raster profiles was desired, with implementation as soon as the profiles are operational. The NARSAP workstations were to be located near the Advanced Cartographic System (ACS), a primary component of the USGS’s modernized map production system. Because the workstations would be required to exchange GIS and other data with the ACS workstations, there had be compatibility with that system. The NARSAP system acquisition began with the intent to purchase a commercial off-the-shelf (COTS) system, specifying the system in the broadest possible functional terms so that the specifications could be met by vendors’ standard product lines rather than customized products. Innovation on the part of respondents was welcomed. If a function required by the specification could be met by a product in an acceptable manner other than that defined by the specifications, the vendor was encouraged to address the alternative. It was preferred that the functional requirements be met by a truly COTS system rather than by special modifications to a system. SYSTEM REQUIREMENTS When the NARSAP specifications were being developed, three points were stressed: 1. The system specifications would have to be written in the broadest possible terms so that they could be met by standard product lines. No custom development was to be involved in the procurement. 2. The initial system configuration would have to provide basic processing capabilities for testing potential applications. 3. Because it is impossible to forecast what new capabilities will be developed or where they will come from, the initial system must be as open as possible to future enhancements. A block diagram of a first draft is shown in figure 1. Its purpose was as much to help the USGS understand what was needed as it was to help prospective contractors. The final configuration was clearly left to the contractors to propose. Workstations were to have stand alone capability. However, a Transmission Control Protocol/Internet 273

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