Deliberations of the Technical Commissions — Deliberations des Commissions techniques — Verhand- 
lungen der Technischen Kommissionen 
The ISP Council and the Presidents and Secretaries of the ISP Commissions discussed the drafting 
of the minutes of commission sessions, to be published in the Archives, at their meeting held in Hel- 
sinki on July 11, 1976. Here they decided that the minutes should be recorded by the Commission 
Secretaries, after which the Commission Presidents should approve them and hand them over to the 
Secretary of the Congress by the end of the Congress. 
As to the contents of the minutes, it was decided not to give a verbatim report, but to include only 
summaries of discussions. In principle, only the titles and authors of the papers presented at the 
Congress were to be mentioned. 
Later on, however, the editors of the Archives considered it appropriate to complete and make uniform 
the minutes of the different Commissions, partly by following the procedure of the meetings on 
magnetic tape and partly by quoting the forms with written comments handed in by speakers having 
participated in the discussions. Even so, only minor alternations have been made. 
Amendments improving the readability of the text include the chronological numbering of the sessions 
of each Commission, covering business meetings and technical sessions alike. Furthermore, the 
Reports, Invited Papers and Presented Papers are followed by code numbers referring to either Archives, 
Vol. XXI, Parts 2—5 or Presented Papers, Parts 1—7. No code number is given for papers not delivered 
to the Secretariate of the Congress and consequently not included in the publications mentioned above. 
COMMISSION I 
PRIMARY DATA ACQUISITION 
RECUEIL DE L'INFORMATION PRIMAIRE 
GEWINNUNG DER AUSGANGSINFORMATION 
President: Dr. E. P. Welander (Sweden) 
Secretary: Mr. B. Adolfsson (Sweden) 
Monday, July 12, 1976, from 14.15 to 15.00 
Session 1 of Commission | 
Topic: Business Meeting 
Chairman: Dr. E. P. Welander (Sweden) 
1. Opening of Business Meeting 
Dr. Welander, President of Commission I, opened 
the meeting and gave a brief summary of Com- 
mission | activities during the past four years. 
2. Working Group Reports 
The chairmen of the Working Groups summarized 
their Reports and gave the following statements: 
2.1. WG I/1 Image Geometry 
Dr. D. C. Merchant (U.S.A.), co-chairman, stated 
that the Working Group was chaired by Dr. H. 
Ziemann (Canada). Two reseau cameras, Zeiss 
RMK-AR 15/23 and modified Wild RC-8 15UAg R10, 
had been calibrated by seven different camera 
calibration facilities which were representative 
on a world-wide basis. These results would be 
compared to assess consistency among the 
various procedures. No attempt would be made 
to assess accuracy. The Working Group had also 
been concerned with studies using test field 
photography. It was anticipated that work would 
be continued on these studies. 
2.2. WG I/3 Remote Sensing 
Dr. W. A. Fischer (U.S.A.) said that the remote 
sensing session would stress applications of 
Landsat information, the observation of lumines- 
cence, and the observation of thermal structures 
of the earth. 
2.3. WG I/2 OTF/IMTF 
Mrs. C. Norton (U.S.A.) gave a brief summary of 
the Working Group Report and outlined the 
coming session on this subject. The Working 
Group has made a summary of the definitions of 
MTF in various countries and ascertained the 
position of MTF as a quality criterion in optical 
tests. 
3. Technical Sessions of Commission I 
President We/ander reviewed the Commission | 
sessions during the Congress. 
83