Modern trends of education in photogrammetry & remote sensing

Bibliographic data

Monograph

Persistent identifier:: 856467936

Title:: Modern trends of education in photogrammetry & remote sensing

Sub title:: ISPRS Commission VI Symposium, September 13 - 16, 1990, Rhodes Island, Greece

Scope:: 1 Online-Ressource (251 Seiten)

Year of publication:: 1990

Place of publication:: Athens

Publisher of the original:: Technical Chamber of Greece

Identifier (digital):: 856467936

Illustration:: Diagramme

Language:: English

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

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:: Monograph

Collection:: Earth sciences

Chapter

Title:: Education of LIS/GIS (WG VI/2 and WG VI/7).

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: EDUCATION IN GIS/LIS AT THE DEUT UNIVERSITY OF TECHNOLOGY. M. J. M. Bogaerts.

Document type:: Monograph

Structure type:: Chapter

103 analysed to prepare the functional specifica tions for the new land information system. Because information planning and analysis is a complicated matter, many methods and techniques are developed to support these activities. In our courses for lad information we train the students in using these methods and techniques, we train them in the planning of information supply and in the functional design of new or improved land information systems. In our group some research projects are carried out like: - analysis of the land information supply of a middle sized municipality; - information analysis and planning of dif ferent applications of land related activities in municipalities; - information analysis and planning for en vironmental information, sea-information, etc.; - information analysis and planning for natio nal cadastral projects in different countries (e.g World Bank project). 3.2 Data in GIS/US The research on data is based on the fact that most land information systems are decen tralized. There are thousands environmental informa tion systems with location oriented informa tion. The same situation occurs with sea- information systems. Within one municipality we detected hundreds of land information systems. There are hundreds of utility informa tion systems in the Netherlands. One of the goals of our research is the improvement of the exchange or combination of data in dif ferent systems. We are more or less develo ping a language to do so. Another aim of the development of data theory is the conversion of textual to graphic information, from raster to vector data and so on. The main topics of the data research are standardization, re search of accuracy and structuring. Because there are so many different date elements in LIS/GIS, we divide them into basic information and specific information. Our theoretical research is only aimed at the basic informa tion. • The main criterion to determine whether a piece of data belongs to the basic information is that it is used by more than one user. Other considerations may plaÿ a role in the determination of basic data. A data element can be so important for the organization of certain processes that it may be decided to record them in a basic registration. Besides basic data, specific data are determined. In combination with the Netherlands Council for Land Information, with the Society of Dutch Municipalities and with the Institution for Norms and Standards, we try to develop a complete classification of the basic data. All the data elements in the different categories are divided into uniform classes. They receive a generally accepted name and a uniform description. Proposals are made for the best way of presentation of the data in information systems. Within this research so called stan dard exchange formats are defined. As already stated, the quality of data within land information systems appears not to be very high. In built-up areas we found that 70% of data were correct. The research is aimed at the necessary quality of land information, especially on the following aspects: reliability, precision, currency, completeness and rele vance. 3.3 Methods and techniques for data acquisi tion One of the biggest problems in automating spatial information systems is the acquisition of digital data, in general one can say that about 75% of the cost of establishing a good LIS or GIS is the data acquisition. Therefore we do a lot of research in this field. The main topics of our research are: - high resolution remote sensing imagery: applications in LIS/GIS; - a vectorization and interpretation of the scanned map data; - computer added surveying using scanned panoramic registrations Remote sensing constitutes a set of techni ques for acquiring and analysing information about objects from the radiation they emit or reflect. Scanning systems installed on satel lites record and transmit imagery data repre senting phenomena related to the surface of the earth. However, remote sensing applica tions depend on spatial resolution of imagery. Data acquired by LANDS AT systems have not been accurate enough to be used in such processes like topographic mapping in scales 1:50,000 or 1:100,000. Introduction of the SPOT system improves the situation signifi cantly. Its 10 m x 10 m resolution in panchro matic mode and capability to create stereo

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