CIPA 2003 XIX"‘ International Symposium, 30 September-04 October, 2003, Antalya, Turkey
273
appropriate positions and therefore some images are very
oblique.
This is the case of the upper part of the central façade,
which is very high - no hydraulic lifting device for the
cameras was available.
5 PROCESSING WITH PHOTOMODELER
The two cameras were calibrated according to the
instructions of the PhotoModeler user manual.
In the course of processing very oblique images for the
purpose of the absolute orientation of models, we had to
make use of additional auxiliary points (see 3.8).
For the assembling of the five orthophotos to a mosaic we
employed the software ALDUS PHOTOSTYLER 2.0.
This orthophotomosaic served for the plot in AUTOCAD,
(see Appendix)
6 PROCESSING WITH DIGITAL VIDEO
PLOTTER (DVP)
At the present moment, only a rectified image of one
façade, produced by DVP-software, is finished.
Orthophoto production is still in progress.
7 CONCLUSIONS
For small plane objects (façades, walls, etc) a simplified
ground control - using tape and level only - is sufficient
for the orthophoto generation. In case of large objects,
however, the ground control has to include topographic
measurements i.e. the employment of theodolites or total
stations is a must.
The PhotoModeler -Software showed to be very useful
for the generation of orthophotos as a base for the plot, i
REFERENCES
1) Albertz, Jôrg - Kreiling, Walter: Photogrammetric
Guide ( pp 55-56 ), 4th Edition, Herbert Wichmann
Verlag,1989.
2) Barbosa, Ivonildo: Projeto de Iniciaçâo à Pesquisa,
Procedimentos de Fotogrametria à Curta Distância
utilizando Câmera Digital nâo-métrica. IME - Instituto
Militar de Engenharia, Rio de Janeiro, 2000.
3) Convênio Instituto do Patrimonio Histórico e Artístico
Nacional (IPHAN) - Fundaçâo Ricardo Franco / IME
Projeto Documentaçâo de Monumentos e Sitios
Arquitetônicos e Arqueológicos: Castelo da Torre de
Garcia D ‘Ávila, 2001.
4) Gomes, Camillo, J.M. et al. The Empress Manor -A
Pioneer Photogrammetric Project in Brazil using the 3x3
Rules. XVII International Symposium, CIPA 1999,
Olinda/PE-Brazil.
5) Gomes, Camillo, J.M .et al: A Photogrammetric
Project in Brazil: The Use of PhotoModeler Software
.XVII International Symposium CIPA 1999, Olinda / PE
-Brazil.
6) Herbig, Ulrike: APIS- Lehrbehelf für eine
Projektarbeit / Arbeitsunterlagen für eine Projektarbeit,
März 1997.
7) Luhmann, Thomas: Nahbereichsphotogrammetrie
(pp. 28-31).
Herbert Wichmann Verlag, Heidelberg, 2000.
8) Waldhäusl, P., Hanke, K., Ogleby, C. : 3x3 Rules for
Simple Photogrammetric Documentation of Architecture,
Melbourne 1994.
9) PhotoModeler Pro: User Manual.
10) Gilson D. Koatz et al: Rock Art Photogrammetry -
The Bear at Fonte Grande II Canyon - Uibai - Bahia,
Brazil XVIII International Symposium CIPA 2001,
Potsdam, Germany.
ACKNOWLEDGEMENTS
We gratefully acknowledge the kind cooperation of
Messrs. LEICA GEOSYSTEMS LTDA, Sao Carlos /SP
and GEO-SWISS LTDA, Rio de Janeiro, which placed at
our disposal the software DVP with Orthophoto Module
and the Total Station LEICA TCR 307.
Captain Justino Francisco Pires de Oliveira, of
Departamento de Engenharia de Fortificaçào e
Construçào, (IME) - for plotting the main façade in
AUTOCAD.
APPENDIX
1 - Distribution of Targets and Auxiliary Points.
2 - Orthophotomosaic.
3 - Plot of the Main Façade.
