ck the cur-
netry.
er's Stadt-
jatz in Vi-
ie building
14 non-sig-
trol points
ccuracy of
ed with an
orders are
hibit many
ind widely
le and free-
r the abili-
ey provide
amount of
d portable
quired im-
orporates a
log images
je digitized
€ a size of
9 of 8.8 um
ection. The
.5 mm and
ngth during
it an image
erson walk-
ing all four
s were ran-
an distance
6 m, which
ation of ex-
camera pa-
termination
the feature
1ined to de-
nage points
the feature
stem, which
is and 1726
linates was
-outine. The
[1 emin X,
-axis in the
0 6.7 um in
e numerical
erived with
e CIPA test
Figure 6: Photogrammetrically generated CAD-model of Ott0-Wagner-Pavillon. From left to right: wireframe
model, surface model, texture model draped with original image data
(Patias, et al., 1993). There a total of 51 solutions was
processed with different hard- and software. The average
precision of these solutions is in a range of 0.3 cm to
2.0 cm. Among these, 29 solutions with small format
cameras were calculated. The precision of these solutions
is in a range of 0.6 cm to 1.1 cm.
The final product of the photogrammetric analysis with
DIPAD is a three-dimensional geometric and semantic ob-
ject description of the Otto- Wagner-Pavillon in the CAD
environment (see Fig. 6). The representation of the archi-
tectural object can be given either by its object points,
lines (wireframes), surfaces or any combinations of these.
The representation in a CAD environment offer also the
capabilities of Virtual Reality in terms of visualization and
animation. The original image data can be draped onto the
derived object model and animations (walk-through, fly-
through) can be performed.
5. CONCLUSIONS
This paper described an object oriented measurement ap-
proach using CAD models for the for the initialization of
an automatic measurement process and for the verification
of the measurement results. Accurate image measurement
using conventional technology demands expertise, is
time-consuming, tiring and not without errors. The semi-
automated approach delivers results in less time and more
reliable than a user with conventional (manual) tools. The
final solution can easily be interpreted and judged by an
operator in the CAD environment, which still requires ex-
pertise, but is feasible for an untrained person.
6. REFERENCES
Albertz, J., Wiedemann, A., 1995. Acquisition of CAD data from
existing buildings by photogrammetry. Proc. 6th Intern. Conf. on
Computing in Civil and Building Engineering, Berlin, 1995.
A.A. Balkena, Rotterdam, pp. 859-866.
Chapman, D.P., Deacon, A.T.D., Hamid, D., 1994. HAZMAP: a
remote digital measurement system for work in hazardous envi-
ronments. Photogrammetric Record, 14(83), pp. 747-758.
El-Hakim, S., Pizzi, N., 1993. Multicamera vision-based approach
to flexible feature measurement for inspection and reverse engi-
neering. Optical Engineering, Vol. 32, No. 9, pp. 2201-2215.
Fellbaum, M., 1992. Low cost surveying systems in architectural
photogrammetry. IAPRS, Vol. XXIX, Part B5, pp. 771-777.
Gruber, M, Meissl, S., Bóhm, R., 1995. Das dreidimensionale
digitale Stadtmodell Wien: Erfahrungen aus einer Vorstudie. Ós-
tereichische Zeitschrift für Vermessung und Geoinformation.
142/95, pp. 29-36.
553
Hirschberg, U., 1996. Object-oriented data-integration between
digitasl architectural photogrammetry and CAAD. IAPRS, Vol.
XXXI, Part 5, to appear.
Hónisch, U., 1992. Verification of graphical primitives in gradient
direction images. IAPRS, Vol. XXIX, Part B5, pp. 646-651.
Oshima, T., 1992. Some recent examples in industrial photogram-
metric application with CAD techniques. IAPRS, Vol. XXIX,
Part B5, pp. 250-255.
Kempa, M., Schlüter, M., 1992. Graphical representation of an ar-
menian castle with AutoCAD. IAPRS, Vol. XXIX, Part B5, pp.
241-244.
Lang, E., Schickler, W., 1993. Semi-automatische 3D-Gebáuder-
fassung aus digitalen Bildern, Zeitschrift für Photogrammetrie
und Fernerkundung, 5/93, pp. 193-200.
Mason, S., 1994. Expert System-Based Design of Photogrammet-
ric Networks. Diss., ETH Zürich, Published as Mitteilung Nr.
53, Institute of Geodesy and Photogrammetry, ETH Zürich.
Mason, M., Streilein, A., 1996. Photogrammetric Reconstruction
of 3D City Models. Submitted to SA J. Surveying and Mapping.
Mc Glone, C., 1995. Some considerations in 3D object modeling.
Published in Photogrammetric Reports No. 63, Royal Institute of
Technology, Stockholm, 1995.
Patias, P., Rossikopoulos, D., Georgoula, O., 1993. CIPA Test O.
Wagner Pavillon. Preliminary Report. Presented at the CIPA XV
International Symposium, Bucharest, Romania, September 22-
25, 1993.
Robson, S., Littleworth, R.M., Cooper, M.A.R., 1994. Construc-
tion of accurate 3D computer models for archaeology, exempli-
fied by a photogrammetric survey of the tomb of christ in
Jerusalem. IAPRS, Vol. XXX, Part 5, pp. 338-344.
Saint-Aubain, J.-P.., 1990. L'image photogrammetrique de syn-
these. IAPRS, Vol. 28, Part 5/1, pp. 182-190.
Sawyer, P., Bell, J., 1994. Photogrammetric recording and 3D vis-
ualization of Ninstints - a world heritage site. IAPRS, Vol. XXX,
Part 5, pp. 345-348.
Schickler, W., 1992. Feature matching of Outer Orientation of
Single Images Using 3-D Wireframe Controlpoints. IAPRS, Vol.
XXIX, Part B3, pp. 591-598.
Schmitt, G., 1993. Architectura et Machina, Vieweg, Braunsch-
weig, 251 pages.
Stevens, D. Mc Kay, W.M., 1990. Combined use of photogram-
metry and CAD in the reconstruction of fire-damaged buildings.
IAPRS, Vol. XXVIII, Part B5/1, pp. 77-85.
Streilein, A. Videogrammetry and CAAD for architectural restitu-
tion of the Otto-Wagner-Pavillon in Vienna, Optical 3-D Meas-
urement Techniques III, Gruen/Kahmen (Eds.), Wichmann,
Heidelberg, pp. 305-314.
Waldhiusl, P., 1991. A test object for architectural photogramme-
try: Otto Wagners underground station Karlsplatz in Vienna,
Proceedings of the XIV. International Symposium of CIPA, Oc-
tober 2-5, 1991, Delphi, Greece, pp. 247-251.
IAPRS = International Archives of Photogrammetry and Remote
Sensing
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B5. Vienna 1996
