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:: [Tuesday, June 7, 1994]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: [Joint ISPRS/GIS '94 Plenary II]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: Approche géomatique de la gestion de l'information relative aux zones cótiéres [Paul Bellemare [...] Edward Light [...] Mary Ogilvie [...]]

Document type:: Monograph

Structure type:: Chapter

Firstly, the physical reference for vertical information in the two datasets is fundamentally different. Land based data is referenced above a vertical reference point (normally determined by tide gauge data from several points). Bathymetric information, while tied to the same points is referenced to a local datum and the absolute value changes with the effect of water level fluctuations . Horizontal reference surfaces are essentially the same, although the precision with which horizontal position is determined is often higher for land based data than for water based data. Time is a very important element of much of the data collected at sea - such things as water temperatures, salinity, fish landings, chemical concentrations etc. vary with time of year, time of day, and vertically within a column of water. Although time may be a factor in some land based data, it generally does not play as prominent a role. The techniques available for data collection are different for collecting land based data as compared with water based data. It is easy to "see" the objects you want to map on the land - this makes aerial photography, GPS positioning, remote sensing from satellites, and traditional ground surveys appropriate methods for collecting this data. It has not been as easy to "see" what is under the water's surface. Recent advances in swath and sweep techniques have made it easier to "see" the sea bottom, but most bathymetric data available today is still of the sounding profiles variety, and most water based thematic data is still being collected as points, leaving large areas of uncertainty filled with interpreted estimates. The water based data community has concentrated recent research dollars in two main areas. One is to devise a database engine, with facility for handling spatial temporal information and even multi dimensional information that could be used in a distributed environment. The other is to coordinate the collection and management of water-based data from all sources. Management of information is clearly a priority with the water based custodians. In general, recent efforts managing the land based data has been more in the applications area - devising new ways to use the data already collected to produce a new service for a customer. Developing a coastal dataset - one which merges data taken from these two worlds - thus poses some challenges. Standards are important. At the very least standards dealing with reference systems, data models, access to information etc. must be pursued. Cooperation among the different players is equally important. The effort required should not be underestimated - much of the entire water based community and much of the land based community must be involved. There has been significant progress in achieving cooperation between the feds (CHS) and the provinces (NS and 50 NB) prov emer mani STA: Lanc over a cor comi stanc incor react dialo The NAT are n Ont inter Inter settir decis and « Coas in ple differ coast Coas has b and x COO Ther« the «

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