CONTRACT(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A000200010060-4
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: July 1, 2004
• Sequence Number: 60
• Publication Date: August 9, 1965
• Content Type: LETTER

Approved F lease 2004/07/29: CIA-RDP78BO47 0002" 0 '1
- TI~ ~?
16 IN IV` 11
9 August 1965
25X1
Forwarded herewith are three copies of the progress
report for the month of July 1965.
If you have any questions please let me know.
AKM:ecp
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Declass Review by NGA.
"This document contains information affecting the netinhdl
defense of the United St>!ss within thm rhesnint fifths
Espionage Laws, Ti11: IS J.t ;. 'iectit ns 791 and 794, tis
taansmissien GI the re.ct,uon ~1I ,ih Cfin:rnts in my ma"hof
to an unauthorized person is ptohibited 4y isW."
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Approved For Rele~3~f~,-RDP78B04770A000200010060-4
25X1
25X1
 Approved Folelease 2004/07/29: CIA-RDP78B047#000200010060-4
6 August 1965
Monthly Progress Report No.1
for the Month of July
25X1
At the start of this period, the main tasks In Phase I of this program were
delineated. These are:
1. Design of variable gamma video amplifier, black level clamp
and shadow suppression circuitry for the ARES viewer.
2. Addition of manually controlled second and third order
transformations to the ARES viewer to correct for oblique
and panoramic distortion.
4,-3. Mathematical analysis of superimposition and weighting to
determine optimum processing parameters.
4. Experimental work using the ARES viewer, modified by Items
I and 2 above, to evaluate Image integration techniques.
5. Formulation of a design for a prototype image integration
viewer.
The first three items were started in July. Some experiments were made on
the ARES viewer to determine the effect of a blanking pulse on the correla-
tion circuitry. Pulses of widths varying from 1 to 10 microseconds were
applied to the scanning CRT's, with the ASN disconnected. These pulses
had no effect on the correlation either with static or moving imagery. It
therefore appears feasible to use a synchronous black level clamp, In which
the DC black level is established by a pulse of approximately 2 microsecond
at the edge of each frame. Modifications to the scanning and viewing
circuits have been made and will be tested next month.
For the variable gamma amplifier, we propose to use two amplifiers in
parallel, one with gamma equal to 0.5, the other with gamma equal to 2.0
and to combine the outputs in varying proportion. The basic amplifier has
been designed and bench testing with a staircase waveform, but will not be
tested in ARES until the black level clamp is operating.
The circuit for a second order modulator has been sketched out. This will
be tried out with oblique and panoramic Imagery to determine whether or
not third order corrections are necessary in addition.
Approved For Release 2004/07/29 : CIA-RDP78BO477OA000200010060-4
 Approved Fo*lease 2004/07/29: CIA-RDP78BO47*00200010060-4
-2- 6 August 1965
A mathematical analysis of the weighting problem has been carried out.
The problem was: given N photographic Inputs containing the same signal,
but different signal-to-noise ratios, how should each Input be weighted
in order to maximize the output signal-to-noise ratio. It was found that
the output is optimized when the Inputs are weighted in proportion to
their signal-to-noise ratios. If this is done, then the signal-to-noise
ratio of the integrated image can always be increased by adding more
Inputs. An input with zero signal-to-noise ratio will not degrade the
output because it will be added with zero weight. The next step in this
analysis will be to determine the effect of the resolution of the input
materials on the resolution of the integrated output.
Plans for Next Period
During the next month, we expect to complete and test the black level
clamp and variable gamma amplifier for the ARES viewer. The second order
transformation circuitry will also be completed. Superimposition tests
will be started using imagery as obtained from different viewpoints under
different illumination and seasonal conditions. The theoretical analysis
of the factors affecting resolution of the integrated image will be
continued.
The contractor certifies herein that he has completed no less than l4% of
Phase I of this contract.
25X1
Manager, Graphic Processing Division
Approved For Release 2004/07/29 : CIA-RDP78BO477OA000200010060-4