8. Cladas, C.N. 
Greece 
A NEW AEROTRIANGULATION METHOD 
USING SEMI-INDEPENDENT MODELS 
The method proposed is based on the determination of a point of the new model (independent), convenient 
for obtaining its longitudinal rotation (¢ - general). 
9. Das, G.B. 
India 
AEROTRIANGULATION WITH INDEPENDENT MODELS 
USING AFFINE TRANSFORMATIONS 
In this paper a semianalytical method of aerotriangulation with Independent Models is outlined using affine 
transformations for determination of perspective centre, linkage of models and absolute orientation. 
10. Dequal, S. 
Italy 
USE OF THE GALILEO DIGITAL STEREOCARTOGRAPH 
FOR ANALYTICAL AERIAL TRIANGULATION 
BY INDEPENDENT MODELS 
After having described the characteristics of a particular configuration of the digital stereocartograph, the 
author deals with the operational proceedings to carry out the aerial triangulation. The followed method 
concerns independent models and its advantages are illustrated in comparison with other methods. 
Some elements about execution time and accuracy are given. The proceedings have been described as far as 
the adjustment phases of the triangulation which can be carried out by the computer itself, but according the 
terms required by the particular user. 
11. Derenyi, E.E. and Maarek, A. 
Canada 
FEASIBILITY STUDY INTO 
AERIAL TRIANGULATION TECHNIQUES 
An investigation was conducted at the University of New Brunswick to seek an answer to the following 
question: What kind of aerial triangulation techniques and instruments should an organization employ, whose 
primary interest is to provide control, maps and other pertinent data for the design of transportation and 
communication routes? 
The test material consisted of nine strips of wide and superwide angle photographs at various scales ranging 
from 1:2 400 to 1:21 600. For of the strips were flown over a density controlled photogrammetric test area 
while the others were flown for specific engineering projects. All strips were triangulated on a Wild A-10 
Autograph, on a Zeiss PSK stereocomparator and on a OMI-Bendix analytical plotter AP-2C, and were 
adjusted by the NRC sequential adjustment technique. Various bridging distances control configuration and 
different degrees of polynomials were employed. Four strips were also adjusted according to a rigorous, 
simultaneous method. 
Instrument efficiency, absolute and relative accuracy were the factors considered for the evaluation of the 
results, and the main conclusions reached were as follows: 
l. The highest accuracy was attained on the stereocomparator followed by the analytical plotter as a close 
second and then the Autograph. 
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