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Photogrammetry is 36 million times faster in recording and
is free of mistakes!
Photogrammetry produces records like tin conserves.
Restitution and plotting of plans can be done later when
needed, if needed (Meydenbauer's ideas will soon be 150
years old).
. The quality of photography has a considerable influence on
the accuracy and reliability of the survey. Thus the
photography must be of the best possible quality and taken
in anticipation of the multipurpose requirements of the
survey.
Duplicate photogrammetric images, with adequate control
information, should be archived in separate geographic
locations (as a security measure). Historical images should
also be archived along with contemporary documentation.
The images have to be treated very carefully.
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Figure 9: He totally identified himself with photogrammetric
recording: The Forafotogrammitti, also a self-portrait (1963)
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004
7. Asmall staff of recorders must be able to make surveys of a
large number of facades daily. (In Austria of the early
sixties one of the main demands of architectural photo-
grammetry was the survey of street facades. The damages
of war-time were to be repaired and the ruins were to be
replaced by new buildings which had to fit to the spaces left
by the old, at least in certain protected groups.
8. The photogrammetric equipment for recording and plotting
has to form a system which is simple and easy to operate.
Foramitti invented and developed special devices and
interfaces to achieve this, such as a special large level and
an orientation cube, inclination wedges for the realisation of
oblique camera direction and just for always the same angle
+/- 29,9540 grades. This funny angle corresponded to (from
other productions stemming and thus economically
available) tooth wheels of the analogue inclination com-
puter for back-transformation of models from an oblique
position to the horizontal. À special small size rectifier was
constructed just for the same inclinations. Carl Zeiss
produced all these accessories, thus increasing remarkably
the importance of architectural photogrammetry. And other
firms followed (Jenoptik Jena and Wild Heerbrugg)
9. Orthophotographs (full sized as well as differential
rectifications) are no replacement for line drawings which
are absolutely necessary for planning and undertaking
practical conservation work. But orthophotographs are a
valuable addition to conservation documentation being
useful for work control.
10. Undevelopments of frontages and also of curved objects can
only be done reliably by photogrammetric means, because
the restitution work for the line-plans will be always
perfectly controlled by the images and their rectifications.
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Figure 10: In Austria many kilometres of street frontages have
been undeveloped (Obernberg, Tyrol, 1966. The left building
became the Austrian Monument of the Month April 2004)
11. The investment needed to develop architectural
photogrammetry was high, but the gains in personal safety
and the speed, precision, and reliability of data capture are
much greater. (Current electronic and digital surveying
equipment can be now more easily afforded)
12. Photogrammetry doesn't only produce images and
coordinates, it delivers documents of a building or monu-
ment in time. These can then be compared with future
images for the detection of changes and trends.
Hans Foramitti had a catalogue of precisely numbered cards
containing his well formulated ideas and principles, wherefrom
he could easily prepare lectures, papers and presentations. The
above could be some of them.
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