b/
M
steep banks of rivers snd artificial wa-
ter reservoirs [10].
The photographs were taken every half
year by terrestrial or air cameras. AS
ccording to the width of a given water
reservoir camera stations were chosen
either on the opposite shore qr on a
floating berge end the approximate ele-
ments.of camera orientations were esti-
meted. Control points snd the level of
water were determined by a geodetic me-
thod, The graphical-numerical elsbora-
tions /plan in 1:200 scale and many
cross seotions/ were carried out on uni-
versal autographs.
the adaption of a film camera to the
following stereophotogrammetrio measure-
ments of speedy processes:
1/ the determination of the process of
shooting off of stones in a stonepit.
The photographs were obtained by a
film camera Pentszet 16; the location
of the stones was imaged on the conse-
cutive frames of the film. In result
of the measurement the vectors of the
displacement of stones and the placeof
their falling were determined.
the stereophotogrammetric : measurement
of the displacements and strains of an
aluminium circuler membrane in the pre
cess of explosive forming [9]. The pre
cess duration was about 3 » 107^ seo,
the displacement rate about 20%/sec
and the strain rate about 100 sec”!; À
high speed film camera Pentazet L
with a stereoscopic attachment for ta-
king of photographs were used; the a-
nalytical method was applied in the
élaboration.
the measurement of the initial velo-
city of dusty fertilizers when deposi»
ted from the nozzle of the plane [11].
The speed of the displacements of some
grains in a one-meter distance from.
the opening of the nozzle was measured.
The photographs were taken in the night
by a stereometric camera. The object
was illuminated by double flash lights
and the exposurestime of the second
light was longer. In this way, two
successive images of the same -displa-
ced grain had different shapes. The
o/
e/
time between the flashes of light was
known and displacements of the grains
were measured on the autograph.
the determination of the shape of con-
tact surfaces of ship segments and its
trajectory during launching [2], [Wb [s].
Because the technology of the construc-
tion of large ships depends on the sSuc-
cesive connecting of parts of the ship,
the actual contact surfaces of the indi-
vidual segments of the constructions
should be determined in order to . ensure
the greatest possible precision of . the
production of such coopereted parts, For
this purpose two convergent photographs
of each targeted surface were taken by a
Zeiss Jena camere and the photogrsmme-
tric model was reconstructed by the ana-
lytical method.
In order to exploit the entire gabarit
of the slipway, the trajectory along
which the ships move should be ^ Known.
For this purpose, the angles of the la»
teral heel /about 26/ were ^ determined.
The moving ship was photographed by .a
RC7 camera and the location of the targe-
ted points on the ship in relation to
the fixed points on the shore was obtai-
ned.
the measurement of the deformations of
various Kinds of bridges.
In.such tasks most often the vertical
vectors of deformations of loaded brid-
ges are only measured. Therefore the
simple method of false-parallaxes can be
used. The only difficulty in solving the
Problem is constituted either by the neal
of making sure of the stability of the
exterior orientation of successive pho-
tographs, or by the preoise estimation of
differences in thea orientations.
the determination of the endurance of po-
wer-line pillars and of wire dips. The
photogrammetrio method was also used for
the measurement of deformations of power-
-line pillars caused by lateral load
/i.e strong wind/. Suocessive states in
the position of the pillar /loaded by in-
creased weights/ were taken én the same
photograph in the night. The edges of the
pillars had been painted with yellow re-
flexed paint and the objects were lit by
