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In monuments with repeated structures, the correlation method was used. It was recognized
by correlation in the first execution of the program in 6 points over 8.
Used aerial photographs were taken with a Carl Zeis RMK AT 15/23 camera, 153mm focal
distance. Using a window of 10 x 10 pixels as exploration kernel, the automatic recognition
was tested by digital correlation for crossings of roads features. They were identified in the
first execution 8 of the 12 crossings and other points with same statistical characteristics.
Graphical results are shown in poster session.
6 CONSIDERATIONS
Adequate election of marks was fundamental to reach with success the recognition
objectives. They were contemplated three fundamental aspects: form, size and mark
contrast. Circles on square mark are appropriate when the image has form heterogeneity.
Results obtained in the digital correlation through the elaborated program were reached
without inconveniences with a personal computer.
Obtained results in FAD, independently of basics photogrammetry analyzed topics, served as
educational tool for photogrammetry disciplines inclusion in graduation and post-graduation
courses in two South America universities: Universidad Federal de Santa Catarina, Brazil
and Universidad Nacional del Litoral, Argentina.
7 REFERENCES
ALBERTZ, J. Photogrammetrisches Taschenbuch. Karlsruhe, Deutschland : HERBERT
WICHMANN, 1980. 280p.
LILLESAND, T; KIEFER, R. Remote sensing and image interpretation. 2"4 Edition. New
York, United States of America : JOHN WILEY & SONS, 1987. 721p.
PIECHEL, J. Procedimientos para la correlación de imágenes estereoscópicas. Capítulo 9.
In: BAHR, H. Procesamiento digital de imagenes. Eschborn, Alemania : DEUTSCHE
GESELLSCHAFT FUR TECHNISCHE ZUSAMMENARBAIT (GTZ), 1991. 428p.
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 163