CONCLUSIONS
The work which has been done so far by the
collaboration established between personnel
respectively of the CSIRO and the Department
of Main Roads, using the expertise and faci-
lities of CSIRO for image acquisition and of
DMR for image evaluation, appears to have
established that surface textures may be por-
trayed in units respectively of orders of
magnitude of millimetres and of micrometres,
should there be practical applications requi-
ring such portrayal. The extension of this
work to the portrayal of quantities of the
order of magnitude of nanometres would not
appear to present undue problems, using
Scanning-electron-microscopes as the image
acquisition systems.
The exploration of this field of research and
development to date has been restricted to
the use of facilities and expertise readily
available to the organisations involved.
Further pursuit of this exploration will be
aimed firstly at the production of convincing
output at micrometre scales and secondly at
transferring image acquisition from the labo-
ratory to the field. In that latter context,
although the objectives and the approach dif-
fered somewhat, work done in England in the
sixties (Sabey & Lupton, 1967) suggests a
direction of development for macroscopic sca-
les of pavement studies, in situ. That paper
described the enclosure of camera and flash
equipment in a wooden box, in the base of
which is an opening framing the segment of
pavement to be portrayed by the relevant
stereogram. A minor variant of that arrange-
ment would be applicable to the concepts be-
ing developed here and may extend to use of
a camera-microscope system for stereograms
capable of portraying micrometre magnitudes.
Many other workers in photogrammetry are con-
cerned with non-cartographic applications.
Amongst these, some are developing systems
aimed at portraying magnitudes of the order
of those mentioned in this paper. Non-topo-
graphic applications have received much grea-
ter prominence in photogrammetric literature
in recent years and many eminent authorities
(Harley, 1967; Karara, 1976; Torlegárd, 1976)
suggest that the next decade or so may witness
more dramatic growth in this area than in the
more accepted cartographic applications.
The initiation of these studies was mentioned
at the Eighth ARRB Conference, in discussions
both on a general paper on photogrammetric
108
research for highway purposes (Smith, Sandwith
& Woodham, 1976) and on the paper to which
reference was made (Yandell & Gopolan, 1976).
Such modest success as has resulted from their
pursuit to date, owes much both to those who-
se contributions are acknowledged separately
and to the author's subordinates in the De-.
partment of Main Roads, without whose exper-
tise and enthusiasm, no such progress could
be achieved.
REFERENCES
HARLEY, I A. (1967) "The Non-Topographic Uses
of Photogrammetry." The Australian Surveyor,
21 (7) 1967.
KARARA, H M. (1976) "Non-Topographic Photo-
grammetry, 1972-1976" XIII Congress of the
International Society for Photogrammetry,
Helsinki, 1976, Report of Commission V,
Photogrammetric Engineering and Remote Sensing
XLII (1), January 1976, pp 37-45.
LAYTON, E. (1978) "Photogrammetry in Metallic
Hardness Measurement Instrumentation."
Presented to Technical Committee 5 (Hardness
Testing in Theory and Application) of the
International Measurement Conference (IMEKO)
in Stuttgart, May 1978.
SABEY, B E and LUPTON, G N. (1976) "Measure-
ment of Road Surface Texture Using Photogram-
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Report LR57, 1967.
SMITH, W B R, SANDWITH, P G and WOODHAM, C A.
(1976) "Further Progress in Photogrammetric
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in New South Wales." Proc 8th Conf ARRB,
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TORLEGARD, A K I. (1976) "State-of-the-Art of
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Helsinki, 1976. Invited Paper. Photogram-
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(1), January 1976, pp 71-79.
YANDELL, W O and GOPOLAN, M K. (1976) "The
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