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of the image. 
The development of aerial photography is based on selecting 
such natural and technological conditions which enable to obtain 
optimal information necessary for the effective solving of cer- 
tain geological problems, i.g. taking photographs at low sun ele- 
vations or even in the twilight, acquiring multiband images etc. 
The working out of the multiband photo camera MKPF-6 designed 
by specialists of the USSR and GDR and produced by the Karl Zeiss 
Jena Interprise (GDR), as well as new processing devices (multi- 
band projector MSP-4) has greatly contributed to the improvement 
of the geological interpretation and acquisition of new informa- 
tion due to false color imaging in different spectral bands and 
producing color composite images. 
Optical-photographic and electronic transformation techniques 
are very important for interpretation of aerial photographic ima- 
ges, which greatly add to the interpretation procedure, make it 
possible to identify informative elements of images and enable to 
analyse them. Methods of the photographic transformation are es- 
sential, according to which gradation and geometric characteristics 
are transformed so that typical distortions of informative photo 
pattern elements are removed or infommative elements are enhanced 
by obscuring the masking background. Such transformations may be 
carried out by using traditional instruments available in any pho- 
to laboratory. Additional important information on the tectonic 
pattern of the territory under study may be obtained when using 
the Coherent Optical Device to construct rose diagrams of tectonic 
features, to assess their extensions, spacing, density etc. 
Problems of the computer-based automation of the image inter- 
pretation procedure present a particular interest. Computerized 
photogrammetric processing of aerial photographs in the course of 
mapping a territory and implementation of different projects is 
being successfully developed. 
The obtaining and application of stereoscopic ortopho tographs 
which may greatly contribute to the geological mapping present a 
particular interest. 
The geological interpretation procedure is rather complicated 
because it is very difficult to work out the appropriate algorithm 
and construct a mathematical model due to different geological and 
geographical environments in which certain geological objects, even 
well identified from space images, occur. Moreover, many geological 
objects are not directly exhibited on photographic images and are 
identified indirectly from their indicators, due to which fact a 
geoindication model of the geological object is to be primarely 
constructed on the basis of its photographic image(1). 
Some steps of the interpretation process may, certainly, be 
implemented by a computer-based system, however the results obtain- 
ed at these steps should be checked and the final decision taken 
505 
  
  
  
nm PAS ERA MEET Ll 
pe Ee 1