DEVELOPMENT OBJECTIVES SPECIAL HIGH-SPEED, STOP-MOTION PROJECTOR

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A000500090003-2
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: March 27, 2001
• Sequence Number: 3
• Publication Date: February 7, 1965
• Content Type: REQ

Approved For Release 2.001/07/16: CIA-RDP78BO4747A00050QQ90003-2
7 February 1965
SPECIAL HIGH-SPEED, STOP-MOTION PROJECTOR
1. Introduction
A special 35mm, high-performance projector capable of stop-motion,
continuously variable speeds from 1 to 200 frames per second is needed
for a series of studies designed to determine the capability of the
human visual system to integrate similar images.
2. Background
As well as can be surveyed, there are no high-performance projectors
already in existence which meet our specifications and which are readily
available for procurement. Consequently, two alternatives present them-
selves: 1) modification of a suitable projector already on the market,
or 2) design of a specially built model. The former alternative is more
appealing since, for its immediate use, the projector will provide only a
means to an end for another project.
3. Concert
For purposes of testing the human visual system's capacity for inte-
grating multiple images, we require a projector of exceptionally high
precision and reliability -- a precision which can be relied upon to the
extent that it can be used as a factor in the statistical calculations of
observers' responses to the projector's visual presentation. Precision,
in fact, must attain to levels exceeding -- for the full range of speeds
-- known sensitivities of the eye to errors in registration, distortion
and, at lower speeds, the division of the duty cycle. .
4. General Description
The equipment should be capable of variable speeds from 1-200 f/sec.
and should be designed to handle 35 mm film. It should translate film by
a stepping mode as opposed to a rotating prism system.
4. Requirements
The following specifications make the projector unconventional, but the
other features which are not discussed here can be assumed to be conven-
tional.
5.1 Variable Speeds. 1-200 frames per second. Must not damage
film at any speed.
Declass Review by NIMA/DOD
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5.2 Film Handling. 35 mm film is to be used. The projector
should also be designed to handle film loops which will be about
2-3' in length.
5.3 Stop Motion. Must not "wipe on" the image as prism mechanisms
do, but must employ a shutter while translating frames.
5.4+ Registration. Because of subliminal effects which would interfere
with testing techniques, registration of projected images must be
precise to the extent that errors are not detectable by the human eye.
This implies a deviation in registration certainly less than one
minute of arc (l), and an accuracy to one-tenth of a minute of arc
(110) is a definite design goal.
5.5 Duty Cycle. 75% viewing: 25% actual translation movement.
(An higher cycle ratio is attractive but is perhaps not reasonable.)
5.6 Distortion. Distortion with regard to discrepancy in distance
measurements on identical projected images should be held below the
level of human perception. Specified equivalently, that number would
probably be less than one-tenth of 1% deviation.
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9.9830-5
NPI' tfi~M No. i,'1 0
SUPPORT/SERVICE REQUIREMENT
DISSEMINATED OCBJOS
(The f'o .lowing i -: req,i re-I when rgmts are levied by external organi.s.st i ..:,O
oFF1CE DATE OF RQMT CONTROL NO.
4PIC DIV/DETACH PROCESSING RQMT PROJ OFF
PHONE
SUPPORT REQUESTED OF PRIORITY DATE REQUIRED
I (The following is required when rqmts are levied for internal support)
P&DS 9 FEB 165
b1V/STAFF DAB OF Ri6,:T CONTROL NO.
25X1A
SUPPORT REQUESTED OF P&DS PROD OFF 2610
'PI ORITY
DATE RE~~,UIRED 31 July 1966
BACKGROUND 1 FORMATIO1 :
The work requested is in support of a departmental: ^ Photo interpretation proj.;
L H Non-photo interpretation project. It will result in: Hard copy report;
Informal report (memo); E ]Basic service only.
Project Description: High Speed Stop Motion Projector
upport component(s); i.e., number of contact prints, enlargements, boards, etc.)
Photographic; L]Reproduction; ^ Mensuration; ^ Graphics; ^ ADP; ^ Editing;
Other (explain below) -- (Include statement as to estimated amount of work required
SPECIFIC SUPPORT/SERVICE REQUESTED: Support from NPIC will probably consist of:
The development of a special,' continuously variable frame speed, stop
motion projector for use in human visual integration studies.
3i URGENCY JUSTIFICATION: (If'immediate support is required a statement of justification
lust be, made on this form. 1
CLASSIFICATION
2001 1' CIA-RDP78B04747A000500090003-2