58
may say that several attempts to apply close-
range photogrammetry to engineering prob-
lems have met with only limited success and
their widespread adoption has not occurred.
Lacmann (1950) described many examples in
his text book, several of which date from the
early part of the 20th century. To this writer's
knowledge, applications in the motor and
chemical industries were eventually discon-
tinued, despite the proven success of the
photogrammetric methods (Farrand, 1965).
This appears to have been because, very of-
ten, the engineer chooses to use those
methods and equipment with which he is
familiar, unless the alternative offers distinct
advantages. If photogrammetry is just as good
as, but no better than, an established tech-
nique, it is unlikely to be adopted because it
requires expertise and equipment which are
relatively unusual. However, there are cir-
cumstances in which photogrammetry may
be applied to advantage and this paper enu-
merates some of them and indicates possible
lines of development.
RECENT ENGINEERING APPLICATIONS, WITH
PARTICULAR REFERENCE TO WORK IN THE UNITED
KiNGDOM
In an attempt to limit the coverage of this
paper, it was decided to review engineering
applications of photogrammetry which have
been published since January, 1972 or which
are known to be in progress. The majority of
examples which will be cited have originated
in the United Kingdom but similar work has
taken place in a number of other countries.
January, 1972 was chosen as a suitable date
because most work reported at the XIIth
International Congress of Photogrammetry in
Ottawa would have been prepared or pub-
lished before that date. Readers in search of
examples of earlier work could consult, for
example, Bulletin de la Société Francaise de
Photogrammétrie, 22, (1966) which contains
articles on the application of close-range
photogrammetry in the hydro-electric power
industry; Journal of Japan Society for Photo-
grammetry, Special Volume 2 (1966) which
contains the papers given at the Commission
V symposium ofthat year; and reviews by the
author (Atkinson, 1968 and 1972b), both of
which include sections on, and references to,
close-range engineering photogrammetry.
The period under review has seen further
gradual development of non-topographic
photogrammetry in the United Kingdom.
Engineering applications form a substantial
section of this development. Perusal of the
Directory which was compiled and edited by
Dowman (1974) confirms this impression. A
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING, 1976
significant application in shipbuilding,
which was described by Newton (1974), has
now been joined by the establishment of a
photogrammetric unit associated with the
construction of oil rigs. Both aspects will be
fully explained in another invited paper* to
be given to the XIIIth International Congress.
These developments have resulted from co-
operation between the University of Newcas-
tle upon Tyne and the British Ship Research
Association in the first case, and between the
University and Longdin and Browning (Sur-
veys) Ltd. in the second.
Because they are the subject of an invited
paper**from the United Kingdom, it is ap-
propriate to mention here the impact of co-
herent optical methods on measurement
problems in engineering. Developments
have already been reported by Gates (1975)
and Burch and Forno (1975) of methods
which are being evolved at the National
Physical Laboratory and, in the latter case, in
collaboration with the Transport and Road
Research Laboratory. Burch and Forno were
specifically concerned with measurements of
deflections of a large beam under load by
using techniques which, hitherto, had not
FiG.1 A scheme to double the carriageway of a
road near Plymouth, Devon involved a section of
excavation in rock. The southern extremity is
shown in one of the survey photographs, together
with adjoining property and a retaining wall and
slope stabilisation measures. The determination
of quantities for a further extensive retaining wall
could be made from the results of a photogram-
metric survey which was carried out by Univer-
sity College London and Cartographical Serv-
ices (Southampton) Ltd. for Devon County
Council.
Invited papers, Commission V, International Con-
gress of Photogrammetry, 1976.
* Close-range photogrammetry as an aid to mea-
surement of marine structures, by I. Newton.
** Three-dimensional location and measure-
ment by coherent optical methods, by J.W.C.
Gates.