6.2 QUT
SVB343 Photogrammetry 1 ( for 1 semester )
Contact Hrs/Week: 3hrs
Lecture 2hrs
Pracs/tuts lhr
Introduction to Photogrammetry;
photogrammetric optics; aerial photography;
geometry and use of single photographs;
geometry and use of stereogram.
The subject is structured and uses computer
based education CBE packages for both
photogrammetry and remote sensing.
Practicals include 1: instrument use and 2:
object reconstruction by manual digitising
of student acquired photography and use of
existing photogrammetric software.
SVB443 Photogrammetry 2 ( for 1 semester )
Contact Hrs/Week: 6hrs
Lecture 2hrs
Pracs/tuts 4hrs
Principles of construction; operation of
analogue and analytical stereoplotters;
aerial triangulation; terrestrial
photogrammetry; analytical photogrammetry.
Practical work involves carrying out a
complete mapping exercise from ground
control through aerial triangulation to
producing a digital map.
SVB643 Photogrammetry 3 (elective) ( for 1
semester )
Contact Hrs/Week: 3hrs
Lecture lhr
Pracs/tuts 2hrs
Numerical relative and absolute
orientation; independent model and bundle
methods of block adjustment for
triangulation; close range photogrammetry
including non conventional techniques;
analytical plotters including generation,
manipulation and storage of digital data;
use of micro and mini computers in
analytical photogrammetry.
The subject is project based with emphasis
on independent student learning.
7. EVOLUTION OF PHOTOGRAMMETRY
The advent of photography in the mid 1800's
was the necessary precursor to the
development of photogrammetry. The
potential for the use of photography as a
measurement tool was apparent from the
earliest days of photography but it was
some time before the many technical
problems were overcome and reliable
solutions were possible.
Early applications of photos came Cry were
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largely terrestrial. first
stereocomparator was constructed by
Pulfrich in 1901 and the first
stereoplotter was developed by Von Orel in
1909. For the next 60 years, these analogue
instruments, which sought to mechanically
reconstruct the photogrammetric model, were
the mainstay of photogrammetry. During this
time, the use of aircraft as camera
platforms moved from being feasible into
the realm of accepted practice, and mapping
from aerial photography using analogue
instruments became the dominant form of
photogrammetric activity.
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As the mathematics of photogrammetry became
better understood, more analytical
solutions were sought to the
photogrammetric problem. The formulation of
the collinearity equations was the birth of
analytical photogrammetry but is was not
until high speed electronic computers
became available that analytical solutions
became viable.
Analytical stereoplotters, which were free
from the constraints of their analogue
counterparts, have been readily available
for less than twenty years. In addition to
freedom from mechanical constraints,
analytical instruments have significant
advantages in performance and accuracy over
analogue solutions.
The relentless advance of computer
technology has lead in recent times to the
development of digital photogrammetry. The
availability of high resolution scanning
systems and high performance graphics
workstations has enabled full digital or
softcopy photogrammetric workstations to
become a reality. The first commercially
available/viable systems have only been on
the market in relatively recent times.
8. FUTURE TRENDS IN PHOTOGRAMMETRY
Predicting the future,
era of rapid change, is always difficult
because one tries to visualise quantum
leaps in systems and technology and this is
always dangerous. In his paper Teaching in
Photogrammetry (Harley, 1977) Harley
discusses many things, most of which are
just as relevant today as they were then.
For example he foresaw great change and
associated pressures and difficult times
for educational institutions; foresaw the
need for real cooperation for small
professions or disciplines to survive and
the paper even contains the phrase "the
world is going digital".
particularly in an
More recent writers such as Gugan (Gugan,
1989) identified or predicted a trend
towards the increasing sophistication of
systems and the need for modular components
with simple interfacing in order to manage
such systems efficiently and effectively.
He also thought that data storage and
manipulation and interfacing between
peripherals would perhaps become more
important from an operational point of view
than the technical aspects of the
analytical plotter itself. And of course he
predicted an increasing use of digital
systems. Leberl (Leberl,1992) has suggested
that with the coming of digital or softcopy
photogrammetry the academic home for
photogrammetry may be better in computer
science. This is a problem which also has
to be addressed.
Over the past few years close range
measurement has been attracting a lot of
interest and activity particularly for
industrial measurement. The trend here is
towards automation and turnkey systems
(Shortis and Fraser, 1991) and does not
necessarily mean an increase in activity
for photogrammetrists.
However, there are some predictions or
trends which the authors believe to be
fairly reliable. We live in a digital age
and can expect to continue to do so for
uite some time. As reported in
Ghosh(Ghosh, 1988) "Recent United Nations’
Studies 1983 on the status of mapping in
the world ...…. indicate that
photogrammetry has reached an effective
level of efficiency and would remain for
years to come the most efficient base