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The programming efforts of the Topographical Survey of Canada and of the Mapping and Charting 
Establishment of the Joint Forces were directed toward supplementing the NRC photogrammetric programs 
in the way of facilitating their inputs and outputs. The Topographical Survey has programs for the assessment 
of errors, the detection of blunders, and for the adjustment of large photogrammetric blocks. Among the 
educational institutions, programming efforts in fortran ii or iv were made at the three universities. All programs 
are reported to the Automatic Data Processing Bibliography of the American Society of Photogrammetry. 
The survey of persons presently employed in photogrammetry and of their future demand is not complete, 
as a number of replies are missing. The statistics for present demand indicate the number of persons needed 
now, in addition to those presently employed. The statistics for future demand list the number of persons needed 
in 1970, in addition to those presently employed and needed. Replacement of retiring persons is not expressed 
as an additional demand. 
When comparing the demand with the student numbers, it becomes evident that the present educational 
institutions will only be in a position to provide the required personnel if the student enrollment is greatly 
increased. This problem was discussed at great length at the second symposium on survey education held in 
Ottawa in November 1966 (30). 
From 40 to 50 per cent of the professional and technical graduates are and will be provided from other 
professional backgrounds (science, civil engineering, forestry), at the professional level, with no special training 
at the technical level. Government and private employers questioned have found this solution acceptable, but 
the provincial governments have indicated that they have a strong initial requirement for specially educated 
photogrammetric professionals and technicians. 
COMMISSION VII 
Photo Interpretation 
Reporter: R. F. Tomlinson, Canada Land Inventory, Department of Forestry & Rural Development 
The field of photo interpretation is somewhat unique in that it is comprised of a large group of interested 
people, many of whom have no connection with the classical forms of photogrammetry. This group includes 
foresters, agriculturists, geologists, teachers, pedologists, geographers, engineers, archaeologists, glaciologists, 
zoologists and hydrologists. 
The executive of commission vii has been concerned with the problem of communication between these 
disciplines and has approached it in three ways. First, it was felt that the executive should be decentralized so 
that closer contact could be established with photo-interpretive work on a regional basis. Accordingly, a 
provincial secretarial network was suggested, resulting in the election of a competent, hard-working individual 
to represent each province. 
This strong regional establishment allowed much greater contact with photo interpreters at the working 
level which, in turn, facilitated the second step in better communication—the reporting and listing of all photo 
interpreters in Canada, cross-referenced as to the type of their work. The records were sent in. A classification 
system describing the work was established. The records were redone to a comparable format and were key 
punched on computer cards. A computer program was written to sort out the information and print out the 
listing. The list was duplicated and distributed to all those listed. Today over 750 photo interpreters in Canada 
have a preliminary list of the names, addresses, and telephone numbers of persons in Canada actively engaged 
in the same, or similar, work. 
The third approach to communication was the Canadian Photo-Interpretation Symposium cosponsored 
by the Interdepartmental Committee on Air Surveys. The meeting, attended by more than 300 photo inter 
preters and international leaders in the field, was notable for its success in the exchange of real knowledge 
about photo interpretation. The theme of the meeting, photo interpretation in rural development and photo 
interpreter education, was put forward in line with the day-to-day needs of photo interpretation in Canada today. 
On the international scale, this Commission was represented at the ISP, Commission VII, meetings in 
Paris 1966, where a formal request was made for the Canadian listing of photo interpreters and the Canadian 
classification of interests to serve as a basis for a similar list for Europe. 
At the Canadian meeting, a similar request was made by Cornell University, which aims to standardize 
a listing of United States photo interpreters on the same basis. 
The International Geographical Union Commission on Aerial Photo Interpretation chose Canada as its 
meeting place in the spring of 1967. This Commission was represented at its meetings. 
The Commission aims to continue its efforts to achieve the exchange of experience between photo inter 
preters and the initiation of steps to specify the problem of photo interpreter education. It hopes to encourage 
discussions, at both regional and national levels, between working photo interpreters and those responsible 
for the teaching of photo interpreters at various educational levels and to take advantage of like experience 
in other countries.