273 
ON THE OPTIMIZATION OF THE PHOTOINTERPRETATI ON - 
REMOTE SENSING PROCESSES AND THEIR APPLICATIONS IN THE 
WETLANDS - THE DANUBE DELTA 
N.Ch.Oprescu, V.Calistru, D.Rosculet, L.Turdeanu 
Laboratory for Remote Sensing, Coll. Civil Eng. 
Bucharest, Romania 
ABSTRACT 
The necessity of adopting complex photointerpretation-remote 
sensing systems has required the well-grounded choice of variants, a process 
that can be compared with the optimization of certain conditions of the basic 
records, of the possibilities and of the available means. Essentially the 
problem consists of using the whole set of data, which have been subjected to 
a process of homogenization and calibration. 
The proposed system involves: /1/ application of the volume 
criterion to quantitative data; /2/ data reduction to a reference system 
(geometric, spectroradiometric) by means of analogical processes mainly, the 
digitizing being reserved for the samples; /3/ design of the system with 
successive models, under restrictive conditions (risk considerations); /4/ 
technical and economical controls of the adopted system. 
Both the R § D programmes were tested in the areas of the Danube 
Delta and some suggestions are presented. 
Considérations sur l'optimisation opérative des processus de 
photointerprétation - télédétection; applications dans les zones humides- 
Delta du Danube 
RESUME 
La nécessité d'adopter des systèmes complexes de photointerpré 
tation-télédétection a conduit a un choix justifié des variantes, processus 
assimilable à celui de l'optimisation dans des conditions données des 
enregistrements fondamentaux, des possibilités et des moyens disponibles. 
Il s'agit en essence d'utiliser la totalité des données en les soumettant 
à un processus d'homogénéisation et de calibrage.