1 - NGA

moan.
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ovarfapplng polr-(photogrammatry) Two
photegraphrr taken a! dfferant exposure
afatione in * a manner that a portion d one
photograph almve the same terrain as ehown
on a portion of the Mhar pMogmph. Thii term
oovere the ganarat caaa and does trot iqrfy Ibt
the phdographs wera taken for afar~ic
examination. Sea dae atoraoscoplc pair.
ovmfap-1. (JCS) In photography, the arrmurd
by wh~h one photograph includes the aerrra
area oovered by another, cuctomsrify aspresaed
as a parcantaga. The overlap between
auccaaabe ak photograph an a ffight line i6
called forward ovorlap or forward fap. Also
called and kap. The everfap between
phetegm@ in djacen! prelfel fight Iinee is
sailed side overlap or aide tap. 2. (JCS) In
03rtogrephy, that prtierr of e map or chart
whii ovetiaps the area covered by anethar of
the same sar”w. 3. An area included wfthin two
surveys of raoord, n4@I by record are daacribad
as having one or more wmrnon boundary tines
with ne inclusion of idarrfical parts.
overlay—1. (JCS) A printing or drawing on a, s
transparent or se.rnkancparant rnedum et the
same esale as e map, chart, etc., to show
derails not appearing, or requiring apacial
emphads, on the Griginal. 2. (digfia!) A data
layer, uaualty dsafing with enfy one as+ed of
related information, WMch is U+ to supplement
the data base, digital, image overfays. e.g.,
overlaying a raster bee map with a vector
afrmefine map. Overlays are registered to the
base, by e common ceerdinate system. 3.
(iiihograp~) Additional data, ore pattern,
printed after the olhar Iaa!urea, so as to
‘overlay’ them. See el= corractlon overtay;
history overley; redaracope overlaya;
●olectlon ovorlay.
overprint-l. (JCS) Inforrmfiin printed or
aterrqmd *n a map or chart, in eddiiion to
that origindfy printed, !0 chow data of
irrwdmca or special uea. Also called ●urprint.
2. A feature of n corrpoalfe map image
irwidantaliy printed co as to interfere with
another feature.
overrun control-@CS) Equipment anabling a
camem to continue operaling for a
pradalermined number of frames or sacends
after normal cutoff.
ovoreh~ot+ transparency or a print of a map
MIL-HDBK-850
wr@albn ueed for recording aupplemantaf
mformat’mn.
OWOI’E129 dlWt-A chml whoee naatline6 hava
been extemled dlghtly, thereby ktoraesing the
ahaat eize to include a amatl fend area m order
to evoid p~fishiig a aqxwate graphii d that
area.
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