Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Multivolume work

Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

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

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [WA-4 GLOBAL MONITORING (2)]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: REMOTE SENSING, AN ENABLING TECHNOLOGY FOR RESOURCE AND ENVIRONMENTAL MANAGEMENT. Karel Vanturennout, Ross Rose

Document type:: Multivolume work

Structure type:: Chapter

239 This system is designed to take in multiple imagery sources, including digitized aerial photographs, to extract from this imagery geographic information with a high level of positional accuracy, and to output this data to a variety of GIS systems via standard exchange formats (see Figure 3). The information extraction process, which includes planimetric data as well as elevation, is automated wherever practically possible, and the interactive operator quality control process is aided by a high resolution stereo display station. The window based operator interface features fully integrated image and graphics manipulation. The system is being designed for extensibility by using object oriented desiqn principles, and features a local 3-D data base (extensible to 4-D) providing for coordinated rapid storage and retrieval of related image, graphics and attribute data. The development of Geomate is being carried out by MacDonald Dettwiler and is sponsored by the Ministry of Energy, Mines and Resources in Canada, who will be the first user. Tools like Geomate will encourage increased use of remotely sensed data in populating and updating geographic data bases for a variety of applications. As these systems become available over the next few years, another factor limiting the growth of remote sensing applications will diminish. Data Base Structures Similar to processing tools, the data storage structures available at present are generally geared towards a single problem domain. While reasonably efficient structures are available for 2-D image data, 2-D vector data and attribute data individually, and to some extent for vector and attribute data combined, the application of remotely sensed imagery will require better mechanisms to maintain historical and logical relationships between the various data types. In addition, the third dimension will have to become more fully integrated for topographic applications to work well. Similarly, means to deal with the time dimension must be devised to allow rapid dynamic modelling of the data, an essential capability for effective resource and environmental management applications. Finally, the proliferation of computer power throughout organizations today drives the need for a combination of central data management and the ability for workstations to safely operate on authorized portions of the data. All of these problems have been known for some time, and a certain level of agreement now exists that the object oriented design technologies now available may enhance our ability to address these problems. So far, however, the software industry has not yet come to grips with this problem domain. Recognizing this situation, Canadian Government and industry made it an integral part of the Geomate development carried out by MacDonald Dettwiler to make progress in this area. Further advances in this area are expected to come out of the data base research labs over the years to come. This then will reduce yet another factor which has contributed to the under-utilization of remotely sensed data, by providing data structures suitable for the dynamic modelling process which should precede resource and environmental policy formulation. Affordability of Computer Technology Due to its very nature, the efficient handling of remotely sensed data requires considerable computer processing and storage resources. Typical systems in years past Figure 3 Hie Geomate Concept featured powerful mini-computers with array processors, expensive image display processors, and a bank of disk drives. Multiple workstations often required repetitive inclusion of these expensive devices. The price for acquisition and operation of these systems could only be afforded by a relatively small group of users.

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