3 
Two sessions at the next congress of Helsinki (1976) will be devoted to the aspects 
connected with above mentioned resolutions and the problems pointed out by the Sym 
recom- 
S vere posium of Turin; also a meeting will be held jointly with the fourth Commission, 
lution due to the obvious difficulty of discussing subject matters limited toa purely in 
npared strumental sphere, i.e. that do not extend to the instrument application,which is 
the responsibility of the fourth Commission. 
9 "Aus The proceedings of the Turin Symposium have been published at the beginning of this 
"i year in a single volume, which has been distributed to all those who have atten- 
ded | the meeting. 
E Tus 3) The 4th resolution recommended to evaluate the efficiency of the various types of 
aised 
instruments to be used in orthophotography, by means of comparative tests. 
ld in 
5 "@ To this purpose a Work Group (II, 4) was established, headed by Dr. T. Blachut, 
called "Orthophoto Equipment", whose main activity is on the one hand to carry out 
an international experiment enabling to compare the different equipment existing 
nee" today, as set forth in the resolution, and on the other to organize symposia on 
ital the subject of orthophotography equipment, both to discuss the various problems in 
volved in the use of such equipment, and to enable information to be exchanged on 
sinki an international level as regards the technique of orthophotography which is as- 
suming quite an important role in the map-making production. 
ympo- À first symposium was held in Cracow, sponsored by the Polish Society of Photogram 
metry, and by the University Stanislaw Staszic of Cracow. 
ompo- Performance modalities and some of the first results of the international experi- 
noto-@ ment on orthophotografic equipment were submitted and discussed, as well as work 
velo- concerning orthophotography. 
From the work submitted, the progress which is being made in USSR in the area of 
ogram orthophotography emerges, together with the delicate questions inherent in the qua 
im- lity of image in orthophotograms, the possibilities of orthophotograms derived from 
photographs taken by orbiting laboratories, the economic aspects of orthophotogram 
photo production, automation of orthophotogram production processes, use of orthophoto- 
soi graphy in architectural surveyes. À few pieces of work referred to interesting or 
thophoto experiences held in the various countries. 
plot All the papers submitted have been collected in one publication published by the 
forts Stanislaw Staszic University, Cracow. 
well The Cracow meeting was also utilized to start the organisation of a Symposium on 
for @ Quoc in Brazil owing to the considerable interest that this country takes 
in such technique because of the wide areas it must survey. 
Having to deal with subjects concerning both instruments and methodologies , the