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(3) Our men are self-trained at present; instruction would help.
(4) No training at present. If proper ‘keys’ and training aids were availa-
ble, use of photo engineering would revolutionize highway studies.
(5) A one-week school for all engineers.
(6) We have a one-week short course in photo identification. We should
have an eight-to ten week course covering interpretation, photogram-
metry, and soil studies.
(7) Few places are available unless one takes a full course in photogram-
metry.
(8) Short training courses are given in photo interpretation as well as in-
terpretation of engineering soils by the Bureau of Public Roads.
(9) Purdue University — geological and soil studies;
Syracuse University — photogrammetric engineering;
Ohio State University — basic correlation with civil engineering;
The Cornell Center for Integrated Aerial Photographic Studies.
(10) There is need for a nation-wide field check of air-photo pattern
elements, soils, and geology. More intensive application and refining
detail needed, as well as aerial photographic analysis.
11. QUESTION: “Please state your views on progress and trends in the appli-
cation of photo interpretation to the field of engineering
problems under consideration.”
Answers.
Replies to this question indicate varying degrees of progress. Some predict
great possibilities; others cite present drawbacks and suggest remedies. Some of
the specific answers are cited:
(1) Progress appears to develop with each problem.
(2) The field is young and growing fast; there should be a big advance in
the next 25 years.
(3) Progress has just started; a supply of trained personnel is necessary for
complete application.
(4) Slow but steady progress is being made. The Society should have a pro-
gram for interpretation; in would help those in research as well as the
practicing engineer.
(5) Photo interpretation can be developed more for greater aid to the
planner and soils engineer.
(6) The trend is toward the study of land use and planimetric mapping.
(7) The trend is to use aerial photos more and more.
(8) Progress has been tremendous in the last 10 years, and very significant
in the last 5 years; application of information of air photos is not widely
enough known; realization of what can be done is just beginning.
Use in railroad engineering.
One reply relating to railroads was received from Victorian Railways, Mel-
bourne, Australia. Their principal objectives for using photo interpretation are
to facilitate planning of railway works and preparation of reports. Mosaics and
individual prints are employed for examination in regard to:
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