In the vector form it is imaged as a set of 
coordinate pairs of the broken line peaks* 
The assignment of the meaning code to each 
thread (road, stream, path, etc*) is done in 
the interactive mode* The operator shows the 
thread with a cursor and assigns its meaning 
code* The digital probe runs through the 
whole of the thread and paints it in the co 
lour of this code* The code is written into 
the caption of the thread*s vector form* 
The rectification of the threads into the 
horizontal projection with the map control 
is carried out through transformation of co 
ordinates of all peaks of the threads* The 
ratios for the transformation are calculated 
by the revision points* 
REFERENCES 
Prett, U*K* 1982* Digital image processing* 
p*499-524* Moscow: Mir* 
Elman, R*I*, E.V.Bakhtinova, A*N.Potapov, 
R*V*Sviridova & L*A*Bersneva 1984* Experi 
ment on the assessment of accuracy of the 
land categories determination on space 
scanner photos* Earth research from space* 
Elman, R*l* & E.I.Pamorozski 1986* Colour- 
textural segmentation of aerial and space 
photographs* Earth research from space* 
Selivanov, A*S*, J*M*6ektln, A*S*Panfllov & 
A.B,Fokin 1981* The study of conditions of 
the ocean surface photgraphy in the spect 
ral band of 0*4-1*1 micrometres* Earth re 
search from space* 
Elman, R*I* 1984* Interactive procedures of 
the contour networks extraction and resto 
ration* Earth research from space* 
Elman, R*I* 1982* Method of the contour vi 
deo information processing* Earth research 
from space*