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Title
International cooperation and technology transfer
Author
Mussio, Luigi

139
EXPERIMENTAL TESTS IN DIGITAL IMAGES PLOTTING
M. Caprioli - P. De Fazio
Politecnico di Bari
Dipartimento di Vie e Trasporti
Sezione Topografia e Cartografia
Via Orabona; 70124 Bari; Italia
Ph: ++39-080-5460387;Fax ++39-080-5460329
e-mail: caprioli@dvt005.poliba.it
ISPRS Commission VI - Working Group 3
Abstract: The Photogrammetric Digital System is always having an increasing diffusion and an
importance that, during these last years, has the tendency to overcome that one of the Analytical tools.
The purpose of this paper is to proceed to a comparison between a Photogrammetric plotting made
with an analytical instrument and a plotting performed with techniques of digital Photogrammetry, in
terms of differences of points coordinates.
Key words: analytical plotting, digital plotting, image matching.
1. Introduction
The I.S.P.R.S. (International Society for
Photogrammetry and Remote Sensing)
defines a Photogrammetric Digital System as a
whole of «hardware and software to derive
Photogrammetric products from digital images
using manual and automatic techniques».
During the congress of 1988 in Kyoto it was
introduced the first D.P.W. (Digital
Photogrammetric Workstation) used for
extracting some informations from the images;
the following decade has been strongly
characterised from studies and fit searches to
increase the degree of automatism in a
Photogrammetric process.
The Photogrammetric Digital System is
always having an increasing diffusion and an
importance that, during these last years, has
the tendency to overcome that one of the
analytical tools.
The technological development in the field of
the images acquisition has brought, in the
Photogrammetric sector, to the development of
new possibilities applicative and of innovative
procedures.
Currently we are in a phase of transition; the
digital systems are progressively taking the
place of preceding Photogrammetric
technologies.
The passage from the Analogical
Photogrammetry to Analytical one has not
brought to new principles and new results on
the contrary to an amelioration in terms of
precision and productivity of the
Photogrammetric process.
The transition from the Analytical
Photogrammetry to the Digital has not
involved a substantial revolution, despite that
the process and conventional principles of the
Photogrammetry continue to be those
traditional: the products are still coordinates of
points, cartography.
The advantage of the Digital Photogrammetry
is essentially to seek in the big number of
possible automatisms which reduce the
intervention of the operator, also necessary for
the control of the correctness of the varied
operations, to least possible.
The purpose of this paper is to proceed to a