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:: [Joint ISPRS/ GIS '94 Plenary III]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: PERSPECTIVES ON THE USE OF SPATIAL INFORMATION John D. Bossler

Document type:: Monograph

Structure type:: Chapter

ar, in read the ising" and s at ntial. oney | any mple, ction ough The s of ed at lards ) the patial riate most ining eans 1g it juals ntain aitted ation /ered most liring yurce obile ghly igital ngth Mens igital 994) are rms r the lude airplanes, boats, highway and railroad vehicles to be “mobile” vehicles. Therefore, since the accuracy requirements are satisfied by such mobile platforms there is only the question of economics. Locating a feature (e.g., an electric pole) to £ 0. 1 m. by traditional surveying techniques costs between five dollars and two hundred dollars depending on factors such as numbers of features, length of traverse, distance to reference control, etc. With mobile mapping systems an “apple to apple” comparison yields reductions in cost of factors of two to fifty. Therefore, | assert that at least consideration should be given to directly acquiring current accurate digital data rather than digitizing old inaccurate maps. The use of digital cameras provides enormous additional benefits such as the ability to keep the data in a database, retrieve it at will and measure something that was not interesting at the time the project was accomplished. The applications of this history file in digital form, are limited primarily by our imagination. Incentives for Sharing Data A number of incentives for data sharing and other forms of cooperation, which will obviously enhance usage, appear to have worked--and in some cases very well. For example, Richard Yorczych of the Horizontal Network Branch of the National Geodetic Survey (NGS) reports that they have received data from other organizations for 65,000 horizontal geodetic control points since 1980 (Yorczych, 1992). This data donor program works because the donors (state, county, and private organizations) want to assure the accuracy of the points they observed 159 developed by the state. and earn a stamp of approval from the nation’s highest authority on geodetic control. It was essential that the NGS develop a standard in order to implement this mechanism. This standard for submitting geodetic information to NGS is known in the vernacular as the “Blue Book” (U.S. Department of Commerce 1980, U.S. Department of Commerce 1988). The cost of these data can be conservatively estimated at 65,000 x $1,000/point = $65,000,000. The value of such data was the subject of a study by Epstein and Duchesneau, 1984, and while cost and value are not always equal, they are generally positively correlated. One of the best examples of a successful incentive program at the state level can be found in North Carolina (Holloway, 1986). Ten years ago, North Carolina began providing seed money to counties that followed certain mapping and other standards These standards in turn comply with federal standards. As far as | know, every county in North Carolina has taken advantage of this program. Since the amount of funding given to each county is small, it appears that money may not be the only motivating factor, and that other less tangible factors like those mentioned in the preceding paragraph are important. CONCLUSIONS Spatial data and information are in demand and are being increasingly used to satisfy the hungry appetites of GIS. The most important data sets are, apparently geodetic control, digital orthophoto, street centerlines, parcel boundaries, land use and hydrological data. Accuracy and quality of data is important but should be viewed from a user of spatial data perspective not

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