LETTER (SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79B00873A002000010029-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: November 8, 2012
• Sequence Number: 29
• Publication Date: August 28, 1968
• Content Type: LETTER

Declassified in Part - Sanitized Copy Approved for Release 2012/11/08 : CIA-RDP79B00873A002000010029-1
N1.0
*.?
28 August 1968
Alexandeia, Va. 22307
Here are data and information requested relating to our Photo
Conversion System.
1
? The information required to reproduce the Orthographic draw-
ings derived from the subject photo is recorded on magnetic
tape simultaneously with the development of the drawing.
2. "Change Detection" is facilitated by comparison of an earlier
photo with the later photo, which has been converted by our
System to the same scale and point of view.
3 Magnetic Tape Storage
One inch of line drawing requires about one inch of tape. A
ten (10) inch reel carries 2400 feet of tape.
Assuming an 80% tape use factor, one reel will store about
23,000 inches of drawing lines.
Using the photograph of the Soviet tanker as an example and
making the resulting Orthographic drawings to a scale of
about two feet for the length of the vessel, a ten inch reel
would store two Orthographic views of about 130 similar ships.
4. Playback
The maximum playback speed is about five times the maximum
recording speed. The maximum recording speed is about ten
linear inches per second. Again using the Soviet tanker as
an example, each new Perspective view of the vessel would
require ten to fifteen minutes.
STAT
STAT
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010029-1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/68 : CIA-RDP79B00873A002000010029-1
bk--1/4
STAT
zu August .1.bti
Page -2-
5. Programming
Less than one minute is needed to set the ILLUSTROMAT
controls for each new view.-No other programming is required.
6. Conversion Processing
Two to three hours would be required for the operator to
extract the necessary ILLUSTROMAT computer input information
from the tanker photo and obtain two Orthographic views.
7. Operation Summary
Two to three hours of the operator's time on the ILLUSTROMAT
would be required to produce two Orthographic views.
Additional views from any desired angleor perspective would
require ten to fifteen minutes of playback time.
8. Optional System Expansions
A graphic CRT display can be added to the system.
If additional storage beyond the practical limits of the
magnetic tape system is required, disc or drum storage may
be added or substituted for the magnetic tape storage.
The ILLUSTROMAT Photo Conversion System is of a modular
design. The construction permits later addition of various
types of inter-face and other equipment:
Let us know if we can provide any,further information.
Sincerely yours,
STAT
Vice President
LMcC/gf
I
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010029-1