EE RO Ne cn Finsterwalder-Mohr, Photogrammetrische Stadtkartierung 1 : 500 137 57
Flurbereinigungsmessung durch Stereophoto- Hauptstadt Hannover, Anweisung für die
grammetrie. Niedersächs. Landesvermessungs- Herstellung und Berichtigung der städtischen
dar 8 amt Hannover 1958. Kartenwerke 1958.
3 [56] Fricke, K., Erfahrungen über die Mitver- [9] LEHMANN, G., Zur Transformation photo-
wendung der Luftphotogrammetrie zur Her- grammetrischer Maschinenkoordinaten in
stellung und Berichtigung großmaßstäbiger Landeskoordinaten. Z. f. Verm. Wesen 1956,
Stadtkarten in Hannover. Z. f. Verm.Wesen S. 185.
.. 1959, S. 464. [10] GorrHARDT, E., Bericht iiber die ersten Er-
[6] Härry, H., Die Planwerke der Grundbuch- gebnisse des MeBversuchs ,,Oberriet der
u vermessung. In Vermessung, Grundbuch und Kommission C der OEEPE. Photogramm-
raft Karte. S. 125 —132. Verl. Schweizer Geometer metria 1958 —59, Nr. 3, S. 133.
Verein, Zürich 1939. [11] HABERLIN u. BACHMANN, Rapport sur l'essai
1 [7] von DER WEIDEN, Der Umfang topographi- controle No. 2 Vercors. Etablissement photo-
raft scher Darstellungen in Katasterkarten. Z. f. grammetrique d'une carte à l'échelle 1 :50000.
Verm.Wesen 1952, S. 280. Soc. Int. d. Photogrammetrie, Comm. II.
[8] Stadtplanungs- u. Vermessungsamt der VIIIéme Congres Stockholm, juillet 1956.
iud
Summary to
1 lis
| der Photogrammetrie survey 1 : 500 of a city. Demonstrated at the example of a part of central Nürnberg. en
By Ricnanp FisrERWwALDER, Munich, and Ecos Monn, Augsburg ne
e
A photogrammetric plotting work of highest accuracy has been performed in the centre of the big town nd
Sung Niirnberg with high and narrow covering with buildings. The work was performed for engineering purposes, he
hem but there are communicated also experiences concerning photogrammetric cadastralwork of high precision. he
und- The photographs have been taken by aid of a camera of Zeiss RMK 21/18, f — 21 cm, 18/18 cm image plan :
ecks with normal angle. Image scale was 1 : 3700, number of models 12 in a strip, area of work 130 ha. — In nt
CKS : 5 . 5 : :
Ei spite of the late season at the end of September the photographic result was sufficient if not optimal. ci-
In- The control points were taken from the precise municipal polygon-net of the year 1912. The points of it ch
und were signalized in advance. The whole plotting work was done by a Stereoplanigraph C 8. Each model was 7
bar adjusted according to a “Helmert” transformation. The mean error of adjustment was found to be un
‘ons. me = * 5,2 cm for the coordinates in plan. This error is composed to one part of the error of photo- re
a : grammetric measurement. It could be observed that several polygonpoints have rather big errors up to h
> am 20 cm. With respect to this fact an error in plan of the photogrammetric coordinates could be evaluated e
ssen, to a little less than 3 cm. This corresponds to the demands of accuracy in a precise cadastral survey. an
ider- At the photogrammetric plotting of covering with buildings difficulties arose from the roof-ledges (Dach-
erne überstände). They were measured with the special instrument “Dachlot” in advance by the later operator
| on the plotter. By this the operator obtained a valuable insight into the complicated conditions of the as
wien area to be plotted. — Plotting was rather difficult as the buildings were of very great variety and different s,
jüro height and as the backyards were often rather dark. The number of objects to be plotted was very great. tet
| der When plotting some uncertainties and gaps remained f.i. behind high walls situated near the edges of m
rung the photos, These uncertainties and gaps were cleared up and eliminated by a later field reconnaissance. e-
2 les This reconnaissance was also used for the examination of the result at site. The time consumption at the TS
NC es plotter was 8 hours for plotting of 1 ha. The fieldwork (preliminary and final reconnaissance with additional
la in surveys) amounted to about 25 ?/o of the time consumption. The extent and organization of the work is ie.
ren, described in detail. — It is important that the major part of all measures could be performed photo- )W
rung grammetrically. The additional terrestrial measures were indeed of considerable extent in the whole, but
g ; | - : pe
. in every case of very local character. The very heavy traffic was no considerable obstacle. The amount of
amt spots not visible from the air was perhaps less than in outskirts of towns where trees and bushes render ed
fort- many objects invisible. th
sun-
oto- he
1geu :
© 1S
he
h-
ly
ns à
ram- er
1d
rstel-
1
rm. - ly
IC
und
| >
TS
al
| n-
| at
| a
1€
- ‘
T diu U* ao wor wr * -- —Á— rym * x sm EX XC
E RA RAI AAA, akt E RARE temet WT RL A A a
Archives 5
