Dalsa Piranha 3 P3-80-08k40-00-R, Руководство пользователя

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Piranha 3 User Manual
Teledyne DALSA 03-032-10216-06
47
overview on p erform ing flat field correction.
Exam p le:
cpa 1 600
Setting a Pixel’s PRNU Coefficient
Pu rp ose:
Sets an individual pixel’s PRNU coefficient.
Syntax: spc i i
Syntax Elem ents:
i
The p ixel nu m ber from
1
to
sensor pixel count
.
i
Coefficient valu e in a range from
0
to
28671
w here:
Exam p le:
spc 1024 10000
Setting a range of Pixel PRNU Coefficients
Pu rp ose: Sets a range of p ixel PRN U coefficients.
Syntax: spr i i x
Syntax Elem ents:
i
The first p ixel nu m ber of the range.
i
The last p ixel nu m ber of the range.
x
Coefficient valu e in a range from 0 to 28671 w here:
N otes:

The first p ixel of the range m u st be less than the last.
Exam p le: spr 4001 4096 0
Subtracting Background
Pu rp ose: Use the backgrou nd su btract com m and after p erform ing flat field
correction if you w ant to im p rove you r im age in a low contrast
scene. It is u sefu l for system s that p rocess 8-bit d ata bu t w ant to
take advantage of the camera’s 12 bit digital processing chain.
You shou ld try to m ake you r d arkest p ixel in the scene equ al to
zero.
Syntax:
ssb t i
Syntax Elem ents: t
Tap selection. Allow able range is
1
to
8
, or
0
for all tap s.
i
Su btracted valu e in a range in DN from
0
to
4095
.
prnu coefficient =
4096
1 +
prnu coefficient =
4096
1 +
i
i
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