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Dalotto, Roque Sanchez 
  
1 INTRODUCTION 
Features automatic detection (FAD) is developing with success since the beginning of the 
digital era. Multiple disciplines, as cartography, photogrammetry, photointerpretation, remote 
sensing, physics, mathematics, statistics, climatology, medicine, and other are interested in 
these activities. The interest in FAD is velocity and objectivity when processing tasks are 
done. 
Images of metallic structures and vehicles, facades, community patrimony preservation and 
aerial photographs were tested. As programming tool to develop the activities, Visual Basic 
version 4 was chosen, for the advantages of the user's graphic interface (Graphic User 
Interface -GUI -). 
The version of the developed program answers to the experimental characteristics or "beta", 
being possible to introduce reforms or improvements. Obtained results in program control of 
quality stage were acceptable according to technical patterns. 
The activities were developed in Santa Catarina Federal University (UFSC), Brazil, Master 
degree course in Civil Engineering. 
Researching in studied topics involves three universities: Universidad Federal de Santa 
Catarina, Brazil; Universidad Nacional del Litoral, Argentina, and Universitat Karlsruhe, 
Germany Working plans are oriented to inclusion of photogrammetry disciplines in South 
America graduation and post-graduation courses. 
2 OBJECTIVE 
Main objective was to program a tool for FAD in images of structures, facades and aerial 
photographs, using a correlated method. 
3 USED MATERIAL DESCRIPTION 
To develop the requested application, a language of high level was used (Visual Microsoft 
Basic Version 4.0 in Spanish), with user's graphic interface (Graphic User Interface -GUI -) of 
the system Windows 98, on 32 bits platform. 
Three cameras were used, being two analogical and one digital. The used pictures were 
paper hardcopy for analogic case, and magnetic support, for digital. Points of taking positions 
were not registered, fact to contemplate in the terrestrial photogrammetry (ALBERTZ, 1980). 
Two amateur analogical cameras were used to obtain pictures of interest. The devices don't 
present control marks and precise focal distances was ignored. A Voigtländer VSL 1 Camera 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 161