Modern trends of education in photogrammetry & remote sensing

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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:: History, MLD and National Reports (WG's VI/1, VI/3 and TF).

Document type:: Monograph

Structure type:: Chapter

195 HISTORY OF PHOTOGRAMMETRY Chapter 6: ANALYTICAL METHODS AND INSTRUMENTS Contributing Author: Sanjib K. Ghosh Professor of Photogrammetry Laval University, Pavilion Casault Quebec G1K 7P4 Canada Tel.: (418) 656-5762 Telex: 051-31621 UNILAVAL Fax: (418) 656-3177 6.1 Introduction In photogrammetry the word "Analytical" has been used synonymously with "computational", where the solutions are obtained by mathematical methods as against "Analog", where solutions are obtained by analogy or similitude developed through optical-mechanical procedures. The backbone of analytical methods consists of various mathematical concepts to rep resent relations between points in the object, their corresponding images and operational procedures to solve specific problems. Analytical photogrammetric procedures may be considered along three operational stages, each involving specific instruments (see Fig. 6.1), viz., those used for acquisition of image data (mensural), those used for data-processing and analyses (computational) and those used for display or presentation of the results. Fig. 6.1 In view of the above, we would study the historical developments firstly with regard to the mathematical concepts and next with regard to the instruments and their potentials for the future. A mathematical model, in expressing the relevant concept, provides insight into the underlying chain of events. There is no mystery about the way in which this insight is achieved. The mathematical models have no scientific value unless they have been validated adequately through experience and research. Scientific validation is an open-ended pro cess. As a mathematical model is successfully tested and used, it becomes established. Otherwise it stands to be changed, modified or simply drop ped. We have witnessed this through the historical development of analyti cal photogrammetry. Furthermore, photogrammetry being an applied science, it is the content and not the form of the mathematical statement (language) that matters most. Thus we have noticed that mathematical and operational concepts have been adapted to circumstances without really changing the basi'c contents. The following sections would highlight the conceptual developments without going into personal details.

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