J.A.Szorenyi 
PHOTOINTERPRETATION AND REMOTE SENSING 
RESEARCH POLICY AND ORGANIZATION 
INTRODUCTION 
From a historical point:of view, remote sensing is an 
expansion of photointerpretation, and has been rapidly evol- 
ving during the last thirty years. Remote sensing involves | 
the collection of data by systems which are not in direct 
contact with the objeots or phenomena under investigation. 
In many instances, technological development of remote sen- 
sing systems has exceeded corresponding development of in = 
terpretation methodologies and techniques, which are needed 
to convert remotely sensed data into usable information. | 
This is the consequence of requirements, defined from dis- 
ciplinetype studies. Thev are primarily a function ot need 
and application for advancing science and technology and, 
in many eases, only indirectly appropriate for resolving 
some real problems. However, from the very beginning inore- 
asing attention has been directed towards the interpreta- 
tive and analytical phases of remote sensing, only recent- 
ly emphasis is being placed on problem-oriented research 
and on development of operational interpretation methodolo- 
gies and techniques. 
Since remote sensing imagery, in general, is non-selec- 
tive with respect to information content, research in the 
field of remote sensing is being conducted by individuals 
and groups with many different disciplinary backgrounds. 
This paper is directed towards the photogrammetrist re- 
quiring information about the principal problems and tasks 
of remote sensing systems including researches in progress, 
in a comprehensive manner.