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Title
Papers for the international symposium Commission VI
Author
Sitek, Zbigniew

8
PAPER
ON
RATIONALISATION OF PHOTOGRAMMETRIC PRODUCTION OF MAPS
"MACRO MODEL FOR A DEVELOPING COUNTRY"
BY
Lt.Colonel P.Misra
B.Sc.,B.E.(Civil), M.Sc.(Geod.Sc)(USA), MBA(Ohio), MlS(lnd)
Director, Survey Training Institute, Survey of India
IIY DERA BA D—500974.
INDIA
Abstract
The necessity for evolving a rational system of production of
maps by photogrammetric processes is greatly felt in developing
countries for sound planning and expeditious completion of nation
al projects. Towards this need a system involving use of aerial
photographs on two different scales is advocated, the smaller one
for planimetry and the larger one for relief survey; the relief
survey may be alternatively done by ground methods, if terrain
and accuracy demand. This is expected to lead to reduction of both
cost and time in production.
INTRODUCTION
Thi3 paper is a result of a case study of survey and map pro
duction processes in the Survey of India and provides a realistic
concept of objectives, constraints of manpower technology and en
vironment to the suggested model. The reader may, therefore, weigh
his observations in the light of conditions existing in India which,
of course, will vary in some respects from those in any other coun
try. At the same time, there may be areas of considerable similar
ity between all the developing countries.
It is a rather common and well accepted rule amongst engineers
that any production process has to be cost-effective. The prepara
tion of maps by photogrammetric process is no exception. The fact
is that a major advantage of the production of maps by employing
photogrammetric techniques is the saving in the cost which in
creases as the scale becomes larger. However, any technique or a
system based on some technique can be termed better only when it
can stand the scientific tests for its betterness. The betterness
has to be proved before investment in costly imported equipment
(which is an important ingredient of the photogrammetric techni
ques) is made. In survey/map production, this betterness can be
seen in a rather simple manner.
BETTERNESS OF TECHNIQUE
In map production fields, it is imperative to achieve several
objectives, for example,
( Q) u a 1 i t y
(Q) u a n t i t y
(C) o s t