Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

Bibliographic data

Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

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

Editor:: Damen, M. C. J.

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:: 8 Geo-information systems. Chairman: J. J. Nossin

Write comment:: Wegen zu enger Bindung kommt es teilweise im Original zu Textverlust.

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: Land resource use monitoring in Romania, using aerial and space data. N. Zegheru

Document type:: Multivolume work

Structure type:: Chapter

954 sources derived from the aerial and space multispectral imagery. The cartographic material users are accus tomed to have maps as a graphical or photo graphic representation, which contents could be read, studied and on which they can work. That is why, a plotter is supplied to the ne> cessary hardware to compile a digital map, in order to draw a classical map, as well. To compile a digital map, therefore, a cer tain technological development stage is re quired, namely, the existence of a topogra phic, photogrammetric, and remote sensing equipment able to record digitally, a compu tation unit with a proper software to process data , a geodetic and cartographic data bank including a data base for digital maps, and a plotter, as well. Although the scale has not the same meaning for a digital map as against the classical one, it was established to use a symbol for each conventional sign being in a biunivocal relation (Figure 3), just to make a graphical representation, when required. Fila fl tcala ci Figure for di ( Figure 1. Diagram of the land cadastre struc ture and their connections with special ca dastre. sources are becoming more and more complex, and thus, the classical cadastre is gradual ly transformed into a more complex one, that is an ensemble of land information systems, able to answer the many various problems in due time. In this respect, there is a ten dency to compile digital maps, an almost new established concept, meaning a digitally stored data collection representing a map contents (StefanoviS 1980;. Considering digi tal map features, we easily can understand the technological process (Figure 2) used to compile it, where data employed are automati cally processed (Zegheru 1981). Figure 2. Input data sources, the main tech nological process stages in digital mapping and final results. The previous diagram obviously illustrates that input data can be derived from topogra phic and photogrammetric surveys, some exis ting maps or document digitizing, photogram metric and remote sensing data and informa tion. In digital mapping technology, geodetic and cartographlo data base is an oompulsory element to deliver data during the processing stage, to store these map contents and other information related to the national land re- Flgure 3. Diagram of connections among topo graphical elements, conventional signs and codes. Errors due to drawing and its base are ad ded to the measuring and data processing er rors during classical map compilation. In this way, the digital map proofs to be more accurate that the classical one. The following reasons are in favour of the digital mapping technology: updating map sim plification, maintaining the accuracy in new and modified elements introduced in the ori ginal map; simplification of the map compila tion having various themes derived from the same original map: various thematic maps could be derived from a topographical map, using a display or a plotter; a shorter time between data collection and map editing sta ges; the possibility for a manifold analysis of information derived from the map contents and their various thematic processings; the possibility to automatically generalize from the digital map to smaller scale classical maps, according to the data base files. The existing data base was conceived to store 1:5,000, 1:2,000 and 1:1,000 scale di gital cadastral maps, using analytical photo grammetric methods (Zegheru et al.1982). A conventional sign atlas suited for the auto matic cartographic requirements was developed to carry out this data base on files corres ponding to the above mentioned scales. These conventional signs were coded considering both connections among symbols, representing the same object at various scales, and data re trieval for different themes (Figure 4) (Fu- soi et al. 1981). The digital cadastral map contents are stored on a scale file, according to its con tent and accuracy. The derived map and plan information is prepared at the drawing scale, and after its cartographic representation, nothing is to be stored in the data base. Among the important facilities of the digi tal mapping technology at the same time, be ing also the main reasons for digital cadas tral mapping, we can mention storage, their conten ting, val. The ready aerial tral d toring to use toring graphs source ting i pend in tion: materi tion, the be equipm skill mation Seve land-u on lan terns, and mo indust themes data s vered at the ing a l real t - On system In t draina rious king i rial p sions are re effect Stud rial e over d rigati been a thodol canal eff ici formal use ir

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