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:: The Impact of Technology on Working Methods, Education, and Professional Status in Photogrammetry and Remote Sensing. F. Ackermann.

Document type:: Monograph

Structure type:: Chapter

22 ice. How- sified and ;liing new >f software 3. The re- mfortable iry scopes ositioning y order of for direct ry effects. is (GIS). presenting id remote revolutionary if compared with the situation of 25 years ago. The changes «are not only drastic by degree and magnitude, they also represent change of concepts and operations on new conceptual levels, with much wider scope and application, interfacing with other disciplines to a previously unknown degree. Such developments seem to follow a certain pattern which is typical for the general features of automation and of systems and which explains to some extent the revolutionary effects. The pattern implies that technical progress often goes through 3 steps, each one leading to a new dimension. We have seen that the developments in photogrammetry started first on a purely technical level, attempting to improve previous performance by making use of new technical tools and by developing their application. There may be further reaching anticipations already on that level, but usually the first phase is a struggle with the gradually evolving technical possibilities. As soon as the technical problems of the first step are solved, then there is a certain explosion, as tasks are solved or come within reach beyond the original scope. In other words, the power of the tools and the related methods push into new thematic expansion, either by increased complexity and increased economic performance, or by the sheer new accessibility of tasks pre viously out of reach and therefore often out of concept. ke GIS. It al plotter graphics, , starting ose range uutionary it the de- i way our iipiies not le field of laps, that ore auto- ;h drastic «ore quite Many developments go through a third step by merging into complete and totally new systems, with a new paradigm. On that level the original starting point is not recognizable any more, as fusion with other techniques and methods has taken place, and the system may have outgrown even the original discipline entirely. 3.2 A few examples may illustrate that scenario. We have reviewed that aerial triangulation, analytical plotters, digital terrain models, computer assisted plotting took quite a long time and extended efforts to accomplish the first step, i.e. to establish themselves on the first level of improved technical performance. During that struggle the extended concepts were gradually clarified and the breakthrough prepared. By successfully mastering the first step, and by solving the problems in a rather general approach, suddenly new qualities appear, leading to new more demanding applications. In this way the block adjustment for aerial triangulation spread out into high precision cadastral or close range photogrammetry, as well as into photogeodesy, apart from killing the classical first order analog instruments which were designed for strip-triangulation. Computer assisted plotting blossomed into digital mapping. Digital terrain models and orthophotos established themselves as new products in their own right, forming the base for multiple derived products. There are also examples in photogrammetry for developments which pass beyond the second step by producing or making part of larger systems which as such had not existed before. They imply a completely new look at tilings, with new demands, new requirements, new results. If it will be possible, for instance, to measure all external orientation parameters of photographs or sensors-accurately enough (with GPS we are partly on the way) then all indirect orienta tion methods in photogrammetry, aeri.al triangulation included, might become obsolete, which have dominated the working methods for more than 60 years. The real examples of change of paradigm are, however, the steps from digital mapping to geo-information systems, from mul- tispectral classification to complete object restitution, and in particular the step from present day digital image processing to «automatic image analysis and to computer vision, including knowledge based systems and artificial intelligence as most powerful disciplines.

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