terms of triangulation, DTMs, orthophotos, mosaics and
perspective scenes, digital photogrammetry is revolutionary;
with respect to the all important task of feature extraction,
however, it will be but evolutionary until usable automation is
included in most systems. Wong's phrase “continued
evolution in automation" (ibid., p. 54) juggled the words again,
but is very pertinent; Dowman (1996) noted, too, that
automation is partly successful and is spreading inexorably.
4.2 Future directions
It is absolutely certain that the DPW will supersede the
analytical plotter very soon, though the potential of the latter
for cost effective map compilation will ensure a continuing
trade in used equipment. We see fluent, optimised flowlines
emerging to give photogrammetry massive increases in
productivity. Project management software, grown from
intelligent photogrammetric applications of software tools
designed for manufacturing industry, combined with
sophisticated image databases and universal use of the
Internet, will control and monitor the flow of processing,
which commences with digital cameras and roll film scanners.
GPS triangulation, DTM generation, mosaicking and feature
extraction will be the mainstays, all benefitting from
successful automation. Advances in map finishing will be
welcome too. Windows NT solutions will appear. DPW
software will become sufficiently refined and robust to equal
that of analytical plotters in maturity and productivity. Remote
sensing, GIS and photogrammetry may well converge, with all
functionalities combined in every workstation. There will be
greater use of client server approaches. A moving matrix of
research organisations, vendors and their people will jostle to
offer these exciting solutions. Continuing cut throat
competition between vendors will keep prices and margins at
their lowest ever, which may inhibit product development or
even cause the demise of some weaker runners, though there
will be no shortage of enthusiasts keen to join the race. All
these directions are logical continuations of trends begun
during the period 1992-96, when competition and technology
interacted to offer users DPWs with attractive variety,
capability, power, maturity and economy. When our
successors make their report in the 2000 Congress, it will be a
success story centred on reductions in the cost of mapping.
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