Topographical and Cadastral work Capacity 
(1991) 
Table 1 
  
The country Usual scales 
Surfaces for 
No.of the No.of the map 
  
surface for cadastral which cadas- map sheets sheets compiled 
(ha) maps tral maps till the end 
1: are compiled of 1991 
at these 
scales 
(ha) 
23,750,000 5,000 23,790,000 41,984 33,700 
2,000 1,133,400 8,300 5,000 
1,000 157,000 4,600 2,600 
  
All sheets of the topographical maps at 
1:2,000 and 1:1,000 scales are reduced to 
a 1:5,000 one to finally cover the whole 
country surface by such basic maps. 
When the general cadastre introduction is 
to be taken place, the complex matters of 
the in-town surfaces and those ones having 
a high economic potential should be consi- 
dered as against surveying and cadastral 
documentation completions. 
Dense topographical details and small sized 
parcels over the respective zones are re- 
quiring 1:2,000 or 1:1,000 scale topogra- 
phical and cadastral mapping, as we have 
already mentioned. 
To compile small scale topographical and 
cadastral maps the possibilities, which 
photogrammetric procedures give, conside- 
ring the respective zone feautures, have 
been studied (Zegheru, 1970; Zegheru,1986). 
The proper photogrammetric procedure re- 
lated to those peculiarities is established. 
Early 1960, the first analytical aerial photo- 
graph plottings were made, based on some 
former studies and investigations. 
Since then, the photogrammetric digital 
measuring and data collecting equipment 
have been ceaselessly improved, computer 
capacity and speed have been increased, 
operation means, data and information sto- 
rage and display supports have been also 
improved, and various plotters for auto- 
matic mapping have been developed all over 
the world. 
During 1981-1985, all these impressive 
offsprings brought about a new technolo- 
gical flowline, measuring, processing and 
mapping photogrammetric data automatically, 
using analytical aerial photograph plotting 
(Zegheru,1982); its improved configuration 
is also used, nowadays, to compile 1:2,000 
scale cadastral maps over rural settlements. 
A Photogrammetric System for Automatic 
Cadastral Mapping (SFAIPLAC) has been de- 
veloped within The Institute for Geodesy, 
Photogrammetry, Cartography, and Land Ma- 
nagement (I.G.F.C.0.T.) consisting of se- 
veral measuring stations, each of them 
having a precision Stereocomparator,i.e. 
a Stecometer or a Dicometer, and a mini- 
computer (PC). A11 these measuring sta- 
146 
tions are linked together to a micro-com- 
puter (host computer), facilitating a fur- 
ther connection to a plotter (Figure 3). 
(1) All points to be measured and linked 
to each other as against the topographical 
and cadastral configurations are marked 
and numbered on the enlarged aerial photo- 
graphs considering the cadastral map com- 
pilation scale; the proper conventional 
sign codes to represent them on a plotter: 
are also written. Toponimy and administra- 
tive names, land-use categories and othel 
cadastral data are written, as well. The 
above mentioned data, written on aerial 
photographs, as well as, other input data 
and information, i.e. cartographic grid 
data, are processed and input, according 
to the technological flowline presented in 
(2), (3) and (4). 
(2) xf;yf coordinates and parallaxes are 
measured on the first aerial photographs 
and slides as stereo pairs, to find 
- aerial photograph indices of a stereo 
pair; 
- aerial triangulation points; 
- points establishing topographical details 
and cadastral map contents. 
(3) The following computations and opera- 
tions are made up for each stereopair: 
- internal orientation; 
- relative stereo pair orientation (sto- 
chastic terrain model) ; 
- relative coordinates of the measured 
points. 
The respective stereo pair measurements are 
displayed to analyse their completeness 
and to add other necessary ones, which have 
been omitted. Data, which all measuring 
stations have captured, are input into a 
mini-computer. 
(4) Data captured by all measuring stations 
(2) are used, to : 
- compute the aerial triangulation point 
coordinates on blocks of aerial photograhs; 
- compute each stereo pair absolute orien- 
tation; 
- compute the measured point coordinates 
on each stereo pair; 
- compute the polygon line intersections 
with the sheet cartographic grid. 
(5) The cadastral map manusciipt is drawn, 
  
usi! 
cad: 
sem: 
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(6) 
sys 
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