RM 
The initial steps of model image forming shows convertion 
from isolated area Ro to left shown image by applying the 
following rules: 
generation of attached roof 
Ro >RRmRe 
generation of wall from roof 
Rc — RcUcoRg 
UcoRg 2 Hip Ucy Rp 
The second image is produced as a result of following rules: 
generation of roof covering wall 
Uc, JcUcoLg 
Ucalp Gy; Ucy Vg 
generation of wall starting from covering roof 
Re > ReLcoRg 
Lco Rg > HiLca 
Hibco Vg 2 FVibeg 
Vico Ry — EjHibco 
HiLeqRy = Hi Vig Leg Ry 
The third image is produced as result of following rules: 
generation of surrounding wall starting from wall 
Lc — LcEjLcg 
EjLco Ry,  WiHig Loy Ry 
generation of adjacent wall 
Lc — Tc Ej1Log 
EjLco Ry, > EH Leg RM 
generation of surrounding walls starting from roof: 
Re > ReUcaRa 
UcoRg => Hz Ucy Rp 
generation of adjacent wall 
Uc > J)cE,Lco 
E;Lco Rg > EH Leg Ra 
Figure 1. Production rules, creating simple block of buildings. 
R; "Re 
| Rn 
Hj | 
/ 4 
/ / 
X Uc 
RM 
Vi / Ryd CPRe 
- y | Hı 
Lc. Hr 
{ / f Ej / 
FE G. "i 
# lc 
Rc 
Ry 
Lc, Hr 
H, : M / Ry Re 
Er Tl 
Tc Lc f r 7 Hr 
Rp E E; y 
Fi Gy 7: 
Hj P 
Lc / i Hj | Rc C 
/ | 
/ E, 7 
Je 
REFERENCES 
Feder, TL, 1971. Plex languages. Information Science, 3, 
pp.225-241. 
Fu, K.S., 1982. Syntactic Pattern Recognition and applications. 
Prentice-Hall, Englewood, Cliffs, New Jersey, pp.129-162. 
Marinov, B., 1988. A Syntactic approach to hierarchical 
topological forming of cartographic information. Annuaire de 
L'institut D'Architecture et de Genie Civil, vol.XXXIII 1987- 
1988, pp.141-153. 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B3. Vienna 1996 
Waltz, D., 1975. Understanding Line Drawings in Scenes with 
Shadows. In:The Psychology of Computer Vision, edited by 
P.H. Winston, Mc Graw-Hill Book Company, New York, 
pp.30-11. 
Weidner, U., Fórstner, W., 1995. Towards Automatic Building 
Extraction from High-Resolution Digital Elevation Models. 
ISPRS J. of Photogrammetry and Remote Sensing, 50 (4), 
pp.38-49. 
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