175 
ed 
r the 
lems. 
y of 
tained 
time 
of 
h 
ter- 
f 
lved 
80, 
PHOTOMETRICaL METHOD OP MAKING THE MAPS OP 
OPTICALLY-UNIPORM TERRAIN RELIEF 
Dr.Kiselev V.V. 
Dr 0 Mamnitsky V.I. 
Dr.Matiyasevich L.M* 
State Scientific-Research and Production 
Centre "Priroda" of Main Administration 
of Geodesy and Cartography of the USSR. 
Krzhizhanovskogo,14,korpus 2, 117801, 
Moscow, V-218,GSP-7,USSR 
Brightness of the photometrically - uniform surface de 
pends on its reflecting properties and orientation relative 
to the directions of illumination and observation.Thus,bright 
ness variations contain information on the shape of the sur - 
face. Van Diggelen (1951) proposed the photometrical method 
for solving the problems of lunar topography which was fur - 
ther developed by Rindfleish (i960)® 
Horn (1975) and ,/oodham (1930 ) have developed the gene 
ral theory for solving the problem of determining the shape 
of objects on the basis of the data on half-tones. 
This problem was also investigated by other authors,but these 
investigations were mainly oriented for development of the 
technical vision systems of robots. 
The report deals with the problem of using the photomet - 
rical method for making topographical maps of the territori - 
es covered by snow. Unlike the Moon,in the conditions of the 
Earth the surface is illuminated not only by direct sunrays, 
but also by the light coming from the sky which is essenti - 
ally the lengthy source of diffusion radiation. In addition, 
it is necessary to take into account the contribution of the 
radiation reflected from the surrounding elements of the ter - 
rain.All this makes much more difficult the application of 
the photometrical method for determining the relief of the 
Earth terrain.