162
with yellow reflexed paint and the objects were lit
by halogens. This method of imaging allows to determine
the successive phases of the changes of the object by
time - parallaxes method without a necessity of eli
mination of differences in exterior orientation of
photographs. The endurance examination of concrete
samples on account of small shape /40 x 10 x 2 cm/
and high accuraccy of measurement /ca - 0.01 mm/
reguired the taking of photographs in 1:1 scale. For
this purpose, the long focus length camera / f = 300
mm/ had.been constructed. The imaging of .successive
states of stretched samples allowed to determine
their deformations and local breaks could be found.
3 . Final conclusions
On the base of the above presented experiments it
may be ascertained that applying of photogrammetry in
fields of industry is technically and economically justified.
As evidence of this statement, it is enought to men
tion the fact that many branches of industry turn to
scientific photogrammetric departments with requests
for help in solving a number of difficult tasks and
the progess in the already existing methods and search
for new photogrammetric procedures are greatly needed
Besides, some photogrammetric technology elaborated
in Inst it ut of Photogrammetry and Cartography of Warsaw
Technical University are used in Photogrammetric
Laboratoryes of the Eneterprise of Geodesy.
Irrespective of the type of the measured objects,
however, photogrammetric methods prove superior to
other approaches since they are characterized by the
following features:
- the possibility of recording of objects which are
impervious to other methods of measurement,
- the possibility of examination of the processes
arbitrarily speedy,
- the possibility of simultaneous recording of an
arbitrarily large number of points on the photograph