BAND PASS FILTERING OF AN AERIAL NEGATIVE USING THE IMAGE ENHANCEMENT VIEWER

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A003100010060-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 9
• Document Creation Date: December 28, 2016
• Document Release Date: February 9, 2000
• Sequence Number: 60
• Content Type: REPORT

===
BAND PASS FILTERING OF AN AERIAL
NEGATIVE USING THE IMAGE ENHANCE
MENT VIEWER
1 11
1 II 1 1111
?
Approved For Release 2000/05/10: CIA-RDP78604747A003100010060-1
BAND PASS FILTERING OF AN AERIAL NEGATIVE
USING THE IMAGE ENHANCEMENT VIEWER
1. Left - Cut-off frequency, Low pass 108 L/mm, High pass 0/ L/mm 1/2 sec. exposure
Right - Cut-off frequency, Low pass 108 L/mm, High pass 0/ L/mm
1 sec. exposure
2. Left - Cut-off frequency, Low pass 108 L/mm, High pass .56L/mm 4 sec. exposure
Right - Cut-off frequency, Low pass 108 L/mm, High pass .56 L/mm 16 sec. exposure
3. Left - Cut-off frequency, Low Pass 108 Lim, High pass .94 L/mm 8 sec. exposure
Right - Cut-off frequency, Low Pass 108 Lim, High pass .94 L/mm 30 sec. exposure
Left - Cut-off frequency, Low Pass 108 L/mm, High pass 1.5 L/mm 16 sec. exposure
Right - Cut-off frequency, Low Pass 108 L/mm, High pass 1.5 L/mm 1 min. exposure
5. Left - Cut-off frequency, Low Pass 108 L/mm, High pass 2.9 L/mm 30 sec. exposure
Right - Cut-off frequency, Low Pass 108 L/mm, High pass 2.9 L/mm 1 min. exposure
6. Left - Cut-off frequency, Low Pass
Right - Cut-off frequency, Low Pass
7. Left - Cut-Off frequency, Low Pass
Right - Cut-off frequency, Low Pass
8. Left - Cut-eff frequency, Low Pass
Right - Cut-off frequency, Low Pass
9. Left - Cut-Off frequency, Low Pass
Right - Cut-off frequency, Low Pass
108 L/mm,
108 L/mm,
108 L/mm,
108 L/mm,
108 L/mm,
108 L/mm,
15.2 L/mm
15.2 L/mm
High pass 5.9 L/mm 30 sec. exposure
High pass 5.9 L/mm 2 min. exposure
High pass 8.8 L/mm 30 sec. exposure
High pass 8.8 L/mm 1 min. exposure
High pass 11.8 L/mm 30 sec, exposure
High pass 11.8 L/mm 1 min. exposure
, High pass .56 L/mm 4 sec. exposure
, High pass .94 L/mm 8 sec. exposure
Approved For Release 2000/05/10 : CIA-RDP78604747A003100010060-1
?
??
?
.
<
*
Approved For Release 2000/05/10 : CIA-RDP78604747A003100010060-1
Itek
ITEK CORPORATION - 10 MAGUIRE ROAD
LEXINGTON 73 MASSACHUSETTS - VOLUNTEER 2-6200
STATINTL
Attention:
Dear Sir,
OSA
4 November 1964
Enclosed are a set of negatives taken on the Image Enhancement
Viewer per your request. Representative frequency bands were chosen,
and the resultant images photographed on commerical Panatomic-X (70 mm)
at several exposure levels. A listing and description of the negatives
is included.
Should any further information concerning the negatives or the
processes involved in their production be required, do not hesitate to
contact me.
Please accept my sincerest apologies for the lateness in the submission
of this set of negatives due to an unavoidable administrative delay.
STATOTHR
PN:jw
Enclosure
Sincerely yours,
Approved For Release 2000/05/10 : CIA-RDP78604747A003100010060-1
Approve
For2Itaiase 2000/05/16 cit3IhlifIEMB04747A003100010060-1
TO
?
.
Jaya,
IALS
DATE
.
/
.
.0 4,
.
1
.
.
.
RETURN TO SENDER
ACTION
CONCURRENCE
INFORMATION
COMMENT
FILE
SIGNATURE
REMARKS
25X1A
F:..
NAME AND ADDRESS
1
6Y
FORM ?2
1. 59
(40)
Approved For Release 2000/05/10 : CIA-RDP78604747A003100010060-1
Approved For Release 2000/05/10 : CIA-RDP78604747A003100010060-1
FORM NO.
101 REPLACES FORM 10-101
1 AUG 54 WHICH MAY BE USED.
147)
Approved For Release 2000/05/10 : CIA-RDP78604747A003100010060-1
BAND PASS FILTERING OF AN AERIAL
NEGATIVE USING THE IMAGE ENHANCE-
MENT VIEWER