Actes du 7ième Congrès International de Photogrammétrie: Actes du 7ième Congrès International de Photogrammétrie

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Multivolume work

Persistent identifier:: 1048858235

Title:: Actes du 7ième Congrès International de Photogrammétrie

Sub title:: Washington, septembre 1952

Year of publication:: 1954

Place of publication:: Amsterdam

Publisher of the original:: Argus [u.a.]

Identifier (digital):: 1048858235

Language:: English

Other Title:: Paralleltitel: Proceedings of the 7th International Congress of Photogrammetry

Corporations:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Adapter:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Document type:: Multivolume work

Volume

Persistent identifier:: 104885955X

Title:: Actes du 7ième Congrès International de Photogrammétrie

Sub title:: Proceedings of the 7th International Congress of Photogrammetry

Scope:: circa 800 Seiten in verschiedenen Seitenzählungen

Year of publication:: 1954

Place of publication:: Amsterdam

Publisher of the original:: Argus u.a.

Identifier (digital):: 104885955X

Illustration:: Illustrationen

Signature of the source:: ZS 312(11,2)

Language:: French

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

Corporations:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Adapter:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: SOME ASPECTS OF PHOTOGRAMMETRY IN GREAT BRITAIN by J. A. Eden.

Document type:: Multivolume work

Structure type:: Chapter

de id he of SS ar 7, in 1€ 1€ nt n al n ds (407) SOME ASPECTS OF PHOTOGRAMMETRY IN GREAT BRITAIN by J. A. Eden. 1. The Photogrammetric Society. I am glad to be able to report that we have at last a Photogrammetric Society in Great Britain open to any who may care to join. The Society does not claim to represent everyone interested in Photogrammetry in the country, but it is the only open society in the country, exclusively interested in Photo- grammetry, and is to publish a journal which promises to be of a high standard. In Britain, publications on this subject have been rather scattered in various technical journals so that little may have been widely read particularly by photogrammetrists overseas. We hope the new journal will help to make British work better known. 2. Precision Plotting Machines. Frequent reference in this paper is made to precision plottng machines. This term is intended to describe that group of plotting machines, similar in general characteristics to the Wild A5 such as are made by Zeiss, Wild, Poivil- hers and Santoni and which are capable of a higher degree of precision than many other instruments such as the multiplex. There is no intention to imply that the multiplex or any other instrument is not capable of the precision for which it is designed. 3. Tbe General Survey Problem as viewed in Great Britain. I believe some of our international friends rather think that because we in Britain do not use a very large number of precision plotting machines we are a bit slow in the uptake and behind the times. Nothing could be further from the truth. I should like to outline briefly how, I believe, most of us in Britain view the general survey problem. There is, of course no divergence from the view that the basis of any survey must be an accurate framework of points over the country, and that this framework should then be broken down into smaller frameworks as required. The initial framework should be established to the greatest possible accuracy since this will form the basis of all surveys of any type which may be undertaken in the future. Up to the present, this primary framework is necessarily undertaken by ground survey methods. Having got the initial framework, the next consideration is to decide the scale and accuracy of the detail survey. This must be governed by the social and economic requirements which give rise to the need for the mapping. For example it is not considered economical or justifiable to map large areas of completely undeveloped country such as form the greater part of the British Colonial terri- tories, at scales of 1/20,000 or larger. As I see it, the first stage in mapping a completely undeveloped country is to prepare a map at a scale of 1/50,000 or smaller. These scales necessarily involve a considerable amount of convention- alisation. For example, one is not concerned with the widths of roads or the exact sizes of the buildings and the accuracy required for more general detail such as rivers need be no greater than can be drawn at the scale of the published map.

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