b E sie iA ir EE
RR tnus A LU
A
En
|
PH
i
2) The experimental-measurement system, whose basic components are a four degree of freedom
mount for the camera, targets and illumination, a precision track (equivalent to an optical
bench) with targetted object carriage and related instrumentation by means of which targetted
objects can be moved and positioned with respect to the camera for demonstrations and ex-
periments to verify system performance.
3) Other computer facilities which are used for analysis and to develop software for the
operating system (calculating procedure software for the video photogrammetry system
and for analysis of the data obtained during different experiments).
A schematic layout of these three subsystems, with their basic components, is shown in
Figure 10.
Tape
Recorder Computer V
} Black Walls & Ceiling Zz
| —— 4.2 m of movement
Calibration
| pl ck Tape Measure Torget
| : p — b
Y I
x /
| \ Pulley
Keyboard Track as Terget
Rails ^ \ Carriage
| / / \
| | m
: 4 Dagree of — a oa oot
| : Freedom Mount | |
|
| |
b T Tape | Other Forms of Powered
Recorder | INA | Targets, Mountable
| :
ll x ——-—- 2 ON: Carrioge
Cord Computer Curtains
Reader Progrommed : /
R à Enclosure For Controlling Illumination Conditions
emote Job
| Keyboard - e| Entry System
NRCC
IBM 360/67 i T
System Ü
FIG. 10: A SCHEMATIC LAYOUT OF THE BASIC COMPONENTS OF THE
LABORATORY EXPERIMENTAL SYSTEM
)
Since the components of subsystem two, such as targets, were developed in parallel with the
development of subsystem one) (the video photogrammetry system) and were used during certain stages
of design development of this system, as part of the design development methodology, and since this
subsystem is basic to any study or design development of optical electrical transducers pertaining to
geometrical measurements, the experimental-measurement system will be described first, before de-
scribing the development of the 30 Hz real-time video photogrammetry system.
20
