m 
Figure 5 - SIMULATIONS SPOT - LOTERIE SUR X 5, et X S3 = 
AUTOMATION OF FOREST DATA OBTAINING AND REPRESENTATION 
BY AERIAL PHOTOGRAPHS 
by 
R.I. ELMAN, L.A. KUZENKOV, E.D. BODANSKI 
(V/0 "LESPROJEKT") Moscow, U.S.S.R. 
The development of new methods of forest aerial photographs 
interpretation and forest thematic mapping has led to the creation of 
the automatized system for the processing of forest photography materials. 
The system consists of a complex of technical means for processing and of 
the developed software. Technical means including computers, scanning . 
microdensitometers, digital displays and plotters form two technological 
lines. One line is designed for automatized determination of forest assessment 
indices of stands by photographs, the other - for compilation and contouring 
of thematic mapping materials, such as forest management map-cases, maps Of 
current changes in the forest and so on. Main stages and algorithms of photo 
processing in each line are brought to industrial use in forest inventory. 
Main operations used in the processing are : interactive contour 
interpretation on displays, automatized recognition of stand classes and 
land categories, determination of texture sings, machine determination of 
forest assessment indices, automatized correction of indices by the known 
interrelations, analytical restitution of contour images for mapping, 
automatized plan assembling and so on. Examples of practical solution 
of tasks are given. 
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