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Jauregui, Luis M. 
TERRESTRIAL PHOTOGRAMMETRY APPLIED TO ARCHITECTURAL RESTORATION AND 
ARCHAEOLOGICAL SURVEYS 
Luis M. JAUREGUI , Manuel JAUREGUI 
University of Los Andes, Venezuela 
Institute of Photogrammetry. 
lumjao@cantv.net 
TC V-7 
KEY WORDS: Terrestrial photogrammetry, archaeological surveys, architectural restoration, CAD 
ABSTRACT 
This paper describes and illustrates with examples, the continuous evolution in methods and tools used at the Institute 
of Photogrammetry of the University of de Los Andes, for applications of Terrestrial Photogrammetry in Architectural 
Restoration, and Archaeological Surveys. Since the late seventies, when this branch of photogrammetry was initiated at 
our institute, a series of works have been realised, each time with more complexity. Actually we are using techniques 
involving the use of CAD software for the 3-D representation of objects, and image processing to incorporate 
photographs of facades in the restitution, archaeological surveys using small format aerial photographs and terrestrial 
cameras, and self developed software for the image treatment. 
The combined use of those techniques, allows to conduct its applications in the field of architecture and archaeology to 
vanguard levels, according to the actual trends in photogrammetry. 
1 INTRODUCTION 
The Institute of photogammetry of the University of Los Andes has dedicated many efforts in the last 20 years to the 
use of the terrestrial photogrammetry applied to the surveying of architectonic monuments, in order to provide all the 
geometrical data needed for restoration works. The main advantage of photogrammetry when compared with 
conventional surveys, in which angles and distances are measured, is its capability of representation of even the smallest 
details of the structure subject to study. The photogrammetric survey can be considered indispensable in any 
restoration work, because it provides with high precision a full geometrical description of the elements involved in the 
structure subject to study. 
2 THE PHOTOGRAMMETRIC SURVEY 
The purpose of the terrestrial photogrammetric survey is to provide precise data on the shape, size and position of a 
specific structure or monument, at a given time, for evaluating its actual conditions and architectonic aspects. There 
can be differentiated two types of surveys: General surveys and detailed surveys. 
General surveys are performed to represent the shape of the building in a general form, just showing the main 
architectural lines. These surveys are used in preliminary restoration works, as well as in inventory studies. 
Detailed surveys are complete and rigorous ones, used in the systematic documentation of the buildings to be restored. 
Its aim is to produce all the geometrical information needed to prepare the planes required for the restoration works 
These surveys has to be done with high precision. 
3 PROCEDURE USED IN THE PHOTOGRAMMETRIC SURVEYS 
The photogrammetric surveys of structures or monuments is a complex procedure, that requires a good planning of the 
activities involved, in order to obtain satisfactory results. The following procedure has been establish for the 
photogrammetric surveys: 
  
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 401