COMBINATION CLOSF-RANGF PHOTOGRAMMETRY AND DIGITAL
PROCFSSING IN ARCHAFOLOGY
Francisco Jaime Bezerra Mendonca, M.Sc.
Departamento de Engenharia Cartografica-DeCart
Universidade Federal de Pernambuco-UFPE
Rua Academico Hélio Ramos s/n - Cidade Univer-
sitaria - Recife-PF,
Brasil - CEP 50741
COMISSION V
ABSTRACT
Close-Range Photogrammetry in Combination with Digital Image Processing offers of solution
for Survey and study of prehistoric roch painting in Brazil. The combination of
photographs, digitized by a scanner with stereomodels taken by terrestrial
colour
Rolleiflex
Camera is discussed and the results are analyzed.
KEY WORDS: Archaeological, Close-Range, Image Processing, Scanner.
1. INTRODUCTION
Brasilian archaeology has two important
centers of research in the northest of the
country. One is the Fundacao Museu do Ho -
mem Americano that is located in the city
Sao Raimundo Nonato in Piauí. The other
of is the Nucleo de Arqueologia-NEA of the
Universidade Federal de Pernambuco,
According to Guidon (1985) and Martin (1989)
147 sites of archaeology are found in the
Northeast of Brazil. Those sites are natural
shelters where primitive man used to live
in order to protect themselves from
inchement weather. Rock paintings and
engravings are found in the majority of
these shelters, many of which have yet to
he documented and analyzed.
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Figure 1: Brasilian Map
According to Nidge Guidon (1985) the
written language is not enough to analyse
and classify rock paintings. It is
necessary first to copy the rock paintings
completely and then analyse them. Is
important to establish morphologic subgroups,
that would be defineded not only because
of their shope itself but also because of
their location and their relative ship: "A
written description can be used in order
to give characteristics of the tecnical
execution, but it can never be used, to
understand the forms and their composition.
Gabriela Martin (1980) describes the
techniques used by archaeologists in
surveying rock paintings: "the technique ,
that is used by most brasilian archaeologists
is to divide the shelter in many areas ,
cover each area with a transparent plastic
sheet and then copy the rock painting by
using special pens. Although this process
fs practical a lot of time is lost
trying to gain acess to the higher places.
The richness of detail and the range of
colours are very specifie to this region
(Martin, 1982). As an exemple of this is
the "Casa Santa" site, located at Carnaüba
dos Dantas, RN, which has a panel (2,0 m x
1,5 m) that has more than one hundred rock
paintings with a great variety of shapes
and colors. The figure 2 shows "Casa Santa"
panel,
2, PHOTOGRAMMETRIC METHOD
The research and learning center of the
Department of Cartographic Engineering of
Universidade Federal de Pernambuco has an
agreement with the German Goverment through
the GTZ(Gesellschaft fuer Technische /
Zusammenarbeit). The photogrammetry
laboratory has two metric cameras: one
UMK/100 mm, made by Zeiss Jena and the new
Rolleiflex 3003, with "reseau" adapted.
Surveying of architecture were already
made (Mendonca, 1985, 1989), based on
some knowledge of archaeological photogrammetry
(Kimata, 1980), (Waldhafusi, 1984) ;
(Muessig, 1980) and (Saley, 1986), it the
surveying of the archaeological site "FUR-
NA DOS CABOCLOS' in Carnaüba dos Dantas ,
RN has been done.