1) accuracy of the underlying mathematical model,
2) physical performance (accuracy, dynamic response).
The accuracy of underlying mathematical models should have
been judged during the stage of design; therefore it will not be the
subject of our further considerations. Consequently, we shall treat
here only the problems related to the physical performance.
2. Specification of operations
Photogrammetric restitution instruments are manmachine
systems for the processing of information. The limits between the
functions performed by the human and by the instrument are not
strictly defined. With increasing automation, the human's functions
are being transferred more and more to the instrument.
A restitution process can be broken down into several partial
operations. The structure of partial operations, or their configura
tion, is related to the intended mode of restitutionor application.
The values and ranges of the system parameters depend also on
the application of the instrument.
fig. 4a
This diagram illustrates the configuration of the basic operations
in stereo restitution. It concerns the flow of information between
the input and the output. The information maybe divided, accord-
8o
1 QUALITY 1
MATHEMATICAL
MODEL
PHYSICAL
PERFORMANCE
fig- 3
semantic information I metric informatbn
I(SCANNING G
1 TRACKINGi
ABSTRACTION
CONVERSION
CONTROLl
PARALLAX
DETECTION
METRIC
CORRESPONDENCE
COMPUTATION
