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scale 1:8000 using Agfa-Gevaert or Kodak panchromatic
aerial films. By means of the copier Elcop of Zeiss
diapositives are prepared on Agfa-Gevaert film.
The necessary control points for absolute orientation of
the aerial photos are provided by analytical block aerial
triangulation. The marking of the points on the
diapositives is done by Wild PUG-4 or Zeiss Transmark
and the photogrammetric measurements are done by the
stereocomparators Stecometer and Dicometer of Zeiss
which are connected with personal computers. The block
adjustment is done by means of the technology for aerial
triangulation by polynomials and bundles, created in this
country. As basis for the aerial triangulation serve the
existing triangulation points which are pre-marked on the
terrain (Katzarsky, 1980, 1987).
The stereoplotting is done by means of analogue
mashines Stereometrograph and the orthophotoscopy -
by Topocart-Orthophot and Topomat, all of Zeiss..
A technology has been developed for the creation of a
digital model of the plotted region from direct
photogrammetric measurements. This digital model is
compatible with the digital model created by direct survey
by means of electronic total stations (Katzarsky and
Postadjian, 1992).
REFERENCES
Instruction for production and revision of topographic
maps at scale of 1:10 000, 1:5000 and 1:2000 (in
Bulgarian), 3rd edition, Main Department of Cadastre,
and Geodesy, Sofia, 1985.
Katzarsky, |., 1980. Analytical aerial triangulation in
practice. 14th ISP Congress, Hamburg, Germany,
International Archives of Photogrammetry, Vol. XXIII,
Part B9, Supplement, pp. 387-391.
441
Katzarsky, |., 1987. Experimentelle Ergebnisse der
Aerotriangulationstechnologie ABA84H. Vermessungs
technik, 5, pp. 163-164, Berlin.
Katzarsky, |, 1988. Fotogrammetria Bulgarissa.
Maankäytto, 3, pp. 42-44, Helsinki.
Katzarsky, |. and S. Postadjan, 1992. Bulgarien
experience in devising automated technology for large-
scale mapping. XVII ISPRS Congress, Washington, DC,
USA. International Archives of Photogrammetry and
Remote Sensing, Vol.XXIX, Part B4, pp. 537-542.
Katzarsky, |. and L. Koleva, 1996. The place of
photogrammetry in land reform and cadastre in Bulgaria.
XVIII ISPRS Congress, Vienna, Commission VI.
AUTHORS' ADDRESSES
Dr Ivan Katzarsky
Ministry of Regional Development and Construction
Main Department of Cadastre and Geodesy
17-19, Kiril i Methodi Street
BG-1202 Sofia, Bulgaria
Tel: (+3592)876 260 and 813 785
Fax:(+3592)872 517 and 874 888
Dr Lilia Koleva
TERRA-F Co.
4 Simeonov Vek Street
Bl.266-A, Vh.D, Ap.79
BG-1111 Sofia, Bulgaria
Tel./Fax: (+3592) 709 135
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996
