6
e
1978 ISP COMMISSION V INTER-CONGRESS SYMPOSIUM - STOCKHOLM SWEDEN
—— 0 eme duum saan men! whats Shes Game Ve due SSW te ER AS a She et ne Mes Oe See WA Se hum Vee eee a o i m m ro m I mel omen
— ar Ge o Ao AE ORA GLE US ee Wee Se 0 Aer Wee ae Gar Woke ee dem S Bee SUAS Ve ee SE Wa dens AS ened t nr Sees ame n
Gates: For example on the left hand side of the table, a basic conventional
imaging process is the conjugate object/image relation, measurements being
made on the image plane to obtain spatial dimensional information about
points in the object. We would therefore put processes in which measure-
ments are not made in the image plane into the "non-conventional" category.
In the second item we find on the right hand side that the unconventional
category includes the use of lasers, X-rays, electron beams, such as we
have been hearing about to-day. And so on through the table which is largely
self explanitory.
The question is now open to the members of the audience. Which of these
topics on the right hand side should we include in our terms of reference?
Are there others we should put in? Are there some that photogrammetrists
would suggest should be left out, for other societies to deal with?
(At this point the following suggestions came forward. These have
already been incorporated in the final version of the table
shown on the previous page.)
Torlegärd: May we add a new item on the "conventional" side, deformation
measurement, long time measurements? As a departure from this, measure-
ments of high frequency vibrations, that cannot be recorded in the conven-
tional ways.
Stewart: I would like to add the use of neutrons in item 2.
Doyle: I would suggest that one of the attributes of conventional imaging
is the perspective relationship. I would also suggest that the plane
surface for conventional imagery is not reallv an adequate criterion, par-
ticularly in the case of non-topographic applications, the field of Commis-
sion V. The third dimension is usually just as important. (Item 5)
Gates: If there are no other suggestions, then the next question is, which
of the "unconventional" items on the final list do people here regard as
currently being of greater interest than others? Are there any views on that?
(In spite of Dr. Gates suggested change of subject, the discussion
continued much as before.)
Derrington: I would like to say that the hardware in non-conventional
imaging systems, such as video recording, the television type of systems,
which have a very high speed of operation, and which can be digitized or
made into elements so that we can get a very rapid result of the simplest
measurement, because I think that in industrial applications most investi-
gations show that the routine method is a simple measurement capable of
rapid results, and most photogrammetric measurements are much more complex
and slower. (Item 3)
We could also add Xerography and recently developed solid state recording
devices.
Pinkney: (There was a comment here, related to the use of non-metric cameras.)
Ghosh: Maybe we should include, under Departures, more than three-dimen-
sional information, which is sometimes derived or obtained directly. The
fourth dimension could be time or some other parameter. I am suggesting
differential mapping when change or other derived parameters are required
by the user. (Item 8)
