* 
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With help from our institute, two photogrammetric jobs have been solved during the last 
two years. One task was measuring the surface turbulence in streaming water [2]. This 
measuring task was carried out by the staff of the Hydraulic laboratory. The Technical University 
of Denmark, with 4 Linhof Technica cameras. Our institute was involved only in the measuring 
of the control points, calibration of the cameras and the program-writing. All other photogramme- 
tric tasks were carried out by the hydraulic professionals, who had no previous photogrammetric 
experience. 
In another work, two architects have been developing and using a numerical 
photogrammetric technique for measuring historical buildings for restaurating purposes. Especially 
in the last case, the interpretation problems were so difficult, that only an architect was able to 
compilate the pictures. 
Both tasks were compilated in the small stereocomparator Zeiss Jena 1818. Having 
overcome the problem of the expensive metric cameras by using ordinary cameras, and evading 
the need of an extensive photogrammetric education by letting a computer program solve the 
problems of orientation and error-finding, only the problem of finding a wider choice of suitable 
stereocomparators remains. 
It is only to hope, that the instrument manufacturers in the coming years will take up 
this problem and build a small stereocomparator with sufficient accuracy (3 to 5 microns) and 
with a simple automatic coordinate registration equipment. 
Réferences 
11 Brown : Close-Range Camera Calibration, Photogrammetric Engineering, Vol. 37, No. 8, 
g g g g 
page 855 - 866. 
[2] Dóhler, M. : Nahbildmessung mit Nicht- Messkammern, Bul. 39, 67-76, 1971. 
[3] Hansen, Eggert : Measurements of Lagrangian Characteristics for Surface Turbulence. 
[4] Hóhle, J. : Zur Theorie und Praxis der Unterwasser-Photogrammetrie. Reihe C : Disser- 
tationen. Heft No. 163, München 1971. 
[5] Jacobi, O. : Kalibrieren gewóhnlicher Photoapparate und deren Verwendung als Messkammern. 
Bul. 36, 59. 70, 1963. 
[6] Jacobi, O. : Udvikling af Metode til Undervandsfotogrammetri. Medd. 5 Akademisk Forlag, 
1967. 
[7] Kólbl, O. : Analytische Verzeichningsdarstellung bei vollstándigen Kalibrierung. Bul. 39, 
169-176, 1971. 
[8] Kólbl, O. : Selbstkaltibrierung von Aufnahmekammern, 33 Photogrammetrische Woche 
Karlsruhe, 1971, 
[9] Lachmann, O. : Die Photogrammetrie in ihrer Anwendung auf nicht-topographischen 
Gebieten, Leipzig 1950, 
[10] Schenk, T. : Nochmals Darstellung von Verzeichnungskurven mittels Potenzreihen. Bul. 
Herc 3, 1971. 
[11] Schwidefsky, K. : Precision Photogrammetry at Close-Range with Simple Cameras. 
Photogrammetric Record, 6 (36) October 1970, 
[12] Torlegaard, K. : On the Determination of interior orientation of close-up cameras under 
operational conditions using three-dimensional test objects. 
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