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 
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in Stuttgart, May 1978. 
SABEY, B E and LUPTON, G N. (1976) "Measure- 
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SMITH, W B R, SANDWITH, P G and WOODHAM, C A. 
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