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

19 merits almost obsolete. They also started with the simple technical aspect of being equipped with a digital computer and of realizing the geometrical image projection by computation and by computer-controlled image positioning. However, they soon evolved, beyond original expec tation, into most versatile photogrammetric workstations which have completely revolutionized the conventional photogrammetric stereo-restitution. In the same way orthophotomaps and digital terrain models, the latter originally intended for automating the derivation of contour lines, developed into new general products which have gained independent standing of their own. I do not have to trace the details of the actual development. All photogrammetrists know how much analytical pliotogrammetry has influenced most thoroughly our working methods, has changed our tools, has pushed accuracy, economy and versatility of pliotogrammetry to new lev els of performance, has led to new conditions of operation, and has resulted in new applications and new products. 2.3 The same type of evolution as with analytical pliotogrammetry we recognize in a second line of development which concerns mapping, the classical field of photogrammetric applica tion. The introduction of computerized methods also in this field started simple enough by computer assisted plotting based on quite simple graphical functions. But again, tliis w r as only the beginning of a revolutionary development. Fig. 1 traces how the photogrammetric plotting instrument with its plotting table has evolved, step by step, towards a system for digital map ping, with the help of interactive graphical workstations, reprojection into the stereo-plotter, up to a system with full command and manipulation of complex graphical functions, linked up with data bases and external information systems. With regard to the cartographic side all channels are open to digital and automated cartography. We see again the general trend of development. Due to the continuously increasing power of computer performance the early simple efforts of improving previous working methods and tools mushroom out into the full exploitation of new technical possibilities. The results are breakthroughs into new performance, new methods, new products, new application, and to in terfacings with other disciplines and other classes of information. 2.4 The third major line of development to be mentioned concerns the complex of remote sensing. The relations and interactions,of remote sensing with pliotogrammetry proper are still relatively weak, because of different product orientation (image interpretation/geometry), different types of data, and different accuracy standards. Nevertheless, there is no doubt that remote sensing and pliotogrammetry converge towards each other as they cover similar enough objectives and operate on the common basis of imaging the same types of objects. From that point of view remote sensing certainly constitutes a great extension of photogramme- try, which has brought in new qualities. The extension concerns first a vastly extended physical range of image data and image information. Special sensors provide infra-color images, multi- spectral image data, thermal infrared and microwave data and images. The second extension is represented by continuously orbiting earth observation siitellites which continuously and globally provide image data from optical and other sensors. The third innovative feature of remote sensing concerns the fact that image data are provided in digital form. Remote sensing has certainly opened the path for digital image processing, even if iemote sensing has been mainly oriented towards multi-spectral classification and digital image interpretation, whilst the geometrical exploitation of image data has kept a low profile for a long

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