50
Fi
of
re 3.2. Black
S Internatio
from ca
the fina
Lacy 19
over the
Mo
your m
sor. Fur
image s
achieve
lurring
hardwar
sensor r
is scale
and sim
Per
tion bu
This is
play as t
Ima
sors, thi
age. A
given d
sors, ra
point w
Rando
hot (left) and
al.)
acitive cou
image. This
9] or, more
hotter object
e important i
nitor resolut
hermore, IR
ould be bl
by renderin
render the i
bilinear filt
solution. Th
up to the
late the low
istence is an
e
[Shreine
imilar to mo
ey move.
es from sen
would man
aussian dis
stance over
dom noise c
ere the sim
noise increa
white-hot (rig
ling, which
can be emu
simply,
y a
s.
s simulating
on is likely
images tend
rred to sim
g the simula
age to a te
ering blur it
at quad coul
onitor resol
r resolution
ther effect
2006] or v
ion blur, wh
ors also inc
fest itself as
ribution of
he image ac
uld be add
lated image
es with the
3.Simulat
t) simulated
roduced dar
ated by usin
plying a tex
the resolutio
uch higher
o lose high-
late this eff
ed image to
ture smaller
hen you sc
in turn be
tion using
f the sensor.
e may sim
locity-depth
re hot spots
ude noise, o
visible strea
andom nois
complishes t
d to the ima
is being re
ain of the i
ionofNight‐
R images of
streaks sur
g a convolut
ured quad re
of the devi
than the res
requency de
ct as well.
an offscreen
than the sen
le it up on
endered to a
L_NEAREST
late easily
gradient bu
tend to sme
ten significa
s in the scan
used to st
is effect. F
e on a pe
-
dered at th
age.
isionandIn
tan
. (Image
ounding hot
on filte
[B
resenting th
e you are e
lution of th
ails—your s
Both effects
surface. To
or resolutio
quad render
other textur
iltering to p
using an a
fers [Lengy
r a bit acros
tly; in olde
lines of the
etch out pix
r more mo
ragment bas
senso
’s re
raredSenso
courtesy
spots in
atia and
streaks
ulating;
IR sen-
mulated
may be
simulate
, and let
d at the
, which
xelate it
cumula-
l 2010].
the dis-
IR sen-
inal im-
els by a
ern sen-
s, at the
olution.
s
3.3
ight‐Vision
that
to t
men
3.3Nig
NV
not
spe
mos
mea
eh
sim
one
ues
typi
and
Fi
SDS
oggleSimula
ixed-
atter
remain stati
e image at t
s of the sens
t‐Vision
s are often
imply ampli
tru
with v
of the natur
that all th
ves more li
lating night
example of a
e could ge
s we did in
al in NVGs.
that is the c
re 3.3. Simul
International.
tion
noise reflec
over time; t
e senso
’s r
or, where a f
Goggle
escribed as i
y visible lig
ry little over
l radiation a
thermal ef
e visible lig
vision is si
simulated N
by with co
isting 3.1 a
There is on
hlorophyll e
ted
VG vi
s variances i
is may be i
solution. Yo
w random p
imulatio
age intensi
—they act
ap with the
night occur
cts discusse
t and has lit
pler from a
G scene.
verting the
d mapping t
material-
a
ect [Hoger
wpoint with
the individ
plemented
may also
xels remain
n
ication devi
ally operate
isible spectr
within the n
d above als
le to do wit
hysical sta
isible-light t
is to the mo
sed effect w
orst 2009].
epth-of-field
al elements
hrough an o
ish to simul
tatically col
es, but mod
in the near-I
m at all. Th
ea
-IR band.
apply to N
heat emissi
dpoint. Figu
xtures to lu
nochromatic
rth simulati
he leaves
effects. (Ima
f the sensor
erlay added
te dead ele-
.
rn NVGs do
part of the
is is because
This doesn’t
G; nea
-IR
n. As such,
e 3.3 shows
inance val-
green colors
g, however,
f plants and
e courtesy o
51
52
Fi
(
m
trees co
they ap
ply a he
night-vi
The
“shot n
portant
cant noi
have no
ements
under l
also the
The
of field;
resultin
scene; n
mented
mulatin
The
can also
clear ni
may sat
Lig
in a sce
right h
re 3.4. Identi
ges courtesy
taining chlo
ear much br
lthy boost t
ion scene to
same techni
ise” discuss
o increase t
se compared
iceable fixe
at may be a
w-light and
oss of contr
e are anoma
NVGs are fo
scene is
lu
ote that the
y jittering t
the results [
prominence
be seen in F
ht to the na
rate entire p
t blooms are
ne saturate
los surroun
al scene rend
f SDS Intern
ophyll are hi
ghter than y
ambient li
accomplish t
ues for simu
d for IR sen
e noise as a
to a scene
-pattern noi
ded to the fi
igh-light co
st under low
ies specific t
cused just li
ry. Figure 3
istant buildi
e view frust
hreiner 200
of stars on a
gure 3.4. W
ed eye, man
xel elements
an importan
he sensor; f
ing the ligh
ered under hi
tional.)
3.Simulat
ghly reflecti
u would ex
ht when ren
is.
lating auto g
ors apply to
function of
lluminated b
e in the for
al output. F
ditions, wit
light conditi
NVGs wor
e a pair of b
3 illustrates
gs are blur
m about the
].
clea
night
ile there are
more are v
in the sensor
effect spec
r point ligh
. These hal
h ambient lig
ionofNight‐
e in the nea
ect in mode
ering the pl
in, sensor r
NVGs as w
ain; a moon
y a full mo
of honeyco
gure 3.4 co
noise varyi
ns.
h simulating
noculars—a
epth of fiel
ed. Depth o
focal point
hould also
only about 8
sible with N
.
fic to NVGs
sources, th
s may be si
t (left) and lo
isionandIn
-IR band. As
n NVGs. Si
nts and tree
solution, an
ll. I
’s espec
ess night ha
n. Many N
b-shaped s
pares the sa
ng accordin
as well. One
a result, mu
in a simula
field may b
few times a
e simulated,
000 stars vis
Gs. Indivi
. Bright ligh
s manifests
ulated by r
w ambient lig
raredSenso
a result,
ply ap-
in your
random
ally im-
signifi-
Gs also
nsor el-
e scene
ly. Note
is depth
h of the
ed NVG
e imple-
d accu-
and this
ble on a
ual stars
sources
itself as
ndering
t (righ
).
s
References
Figure 3.5. L
of SDS Intern
ill
cov
fro
into
deg
to a
Referen
[Bh
[Bo
[Cra
[Ho
[Len
ght blooms a
tional.)
oards over t
r a viewing
the viewe
illuminated
ees from the
inally, you
circular area,
es
tia and Lacy 1
I/ITSEC, 19
jean et al. 200
Jacques G.
Capabilities.
g et al. 2005]
nings. “Lig
ments.” Pro
ervors
2009]
SPIE New
ArticleID=x
gyel 2010] E
Game Engi
2010.
d glow from l
e position
angle of 1.
Craig et al. 2
uildings, th
shape of the
ay want to
to match the
999] Sanjiv
9.
6] Maxime
erly. “Flight
” Enhanced a
Greg Craig,
t Source Ha
eedings of S
Maarten Ho
room, March
4250.
ic Lengyel. “
e Gems 1, ed
ight sources i
f point ligh
degrees, irr
005]. For no
halo effect
ight. These
use a stencil
circular coll
hatia and Ge
. Bonjean, F
Simulator wit
d Synthetic V
odd Macuda,
os in Night
IE 5800 (200
ervorst. “To
27, 2009.
otion Blur
ted by Eric L
simulated
s in the sce
espective of
-point-light
anifests its
ffects are ill
or overlay t
ctors at the
rge Lacy. “In
abian D. La
IR and MM
sion 2006 (Pr
Paul Thomas,
ision Goggl
), pp. 40–44.
ard Realistic
vailable at
nd the Veloc
ngyel. Sudb
G scenes. (
e. These ha
the distance
sources, suc
lf as a glow
strated in Fi
restrict the
nd of the N
ra-Red Senso
ierre, Jens
W Radar Ima
ceedings of
Rob Allison,
s: Psychoph
Night Vision
http://spie.or
ty-Depth-Gra
ry, MA: Jone
a
es courtesy
los typically
of the light
as windows
adiating 1.8
ure 3.5.
ield of view
G tubes.
Simulation.”
chiefele, and
e Generation
PIE) 6226.
and Sion Jen-
sical Assess-
Simulation.”
/x34250.xml?
ient Buffer.”
and Bartlett,
53
54 3.SimulationofNight‐VisionandInfraredSensors
[Shreiner 2006] Dave Shreiner. OpenGL Programming Guide, Seventh Edition. Read-
ing, MA: Addison-Wesley, 2006.
[Thomas 2003] Lynn Thomas. “Improved PC FLIR Simulation Through Pixel Shaders.”
IMAGE 2003 Conference.
..................Content has been hidden....................
You can't read the all page of ebook, please click
here login for view all page.