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INTERNATIONAL SOCIETY FOR PHOTOGRAMMETRY 
COMMISSION IV. MAPPING FROM PHOTOGRAPHS 
SUB-COMMISSION IV:1. LARGE SCALE PHOTOGRAMMETRY 
President: Overdirektór Bórje Lundgren, Rikets allmánna kartverk, Hantverkaregatan 29, Stockholm 8 
Secretary: Byrdadirektor Sven G. Moller, Lantmadteristyrelsen, Vastra Trdadgdardsgatan 2, Stockholm 16 
  
General report 
Part 1. 
Survey of new experiences since 1956 and the state of photogrammetric 
science and technique. 
This survey is based on the answers to the distributed questionnaire from Finland (Lt. Col. K. Lofstrom), 
Sikka), Italy (Ing. Dr. C. P. le Divelec), Lebanon (Dir. M. Grapotte), The Netherlands (Ing. C. M. A. van den 
Hout), Norway (Ing. G. Hagene), South-Africa (Mr D. A. Scogings), Switzerland (Ing. A. E. R. Pastorelli), 
France (Ing. M. Baussart), Germany (Prof. Dr. G. Lehmann), Great-Britain (Mr H. Dawe), India (B. A. J. C. 
and U. S. A. (Mr Chester E. Kowalczyk). 
We refer to »Compte Rendu Officiel Du Neuvieme Congres International Des Géometres, Scheveningen et 
Delft, Pavs-Bas» 1958. The report of Commission III at that congress dealt with instruments and methods, 
photogrammetry and cartography. It contains many valuable information also for the ISP. The reports of 
Commission II, cadastre and rural reallotment and of Commission IV, urbanism, reconstruction and urban 
reallotment may also interest the ISP. 
Hothmer studied »Possibilities and limitations for elimination of distortion in aerial photographs» (Photo- 
grammetric Record 1959. Page 426), discussed and compared the different sources of error and their contri- 
butions to the total error. 
]. Photogrammetric organizations. 
The international photogrammetric production is essentially organized governmentally, in the form of civil 
departments but to some extent as military departments. However there is also a great privately organized 
photogrammetric production. 
Aerial photography is performed in the separate countries by a civil governmental department, or a military 
department, or a private organization or by any combination of them. Some of these organizations also 
perform stereoplotting. 
The governmental departments usually perform stereoplotting for their own purposes, in some countries 
also for other departments and for private consumers. In some countries private photogrammetric organiza- 
tions performed stereoplotting for the governmental departments and the private consumers. In most cases 
however the stereoplotting seemed to be organized as a combination of governmental and private under- 
takings. 
Many private organizations are working all over the world, but most of them only in their own country. 
A general impression is that historic grounds and the different possibilities of introducing photogrammetry 
for special national applications formed the photogrammetric organizations. The new art and technique, 
photogrammetry, is generally accepted, it is true, but has probably not yet found its final form of living. 
It is to recommend to study the types of photogrammetric organizations in different countries, their equip- 
ment, personnel and production during the next four years in terms of a few selected characterising figures. 
2. Cadastral survey and reallotment. 
2.1 The application af stereophotogrammetry. 
The overall impression is that wide-angle vertical photography on film is generally used to a very great 
extent. Normal-angle vertical photography on film, seldom on plates, is also used but only for special 
purposes. Normal-angle convergent photography on film is rarely used.