Piranha HS-S0-06K Camera User Manual
03-032-20213-01
Teledyne DALSA
52
Mnemonic
Syntax Parameters Description
calcu late PRN U
algorithm
cpa
i i
Perform s PRN U calibration accord ing
to the selected algorithm *.
The first p aram eter is the algorithm
w here
i
is:
2
= Calcu lates the PRN U coefficients
u sing the entered target valu e as show n
below :
PRNU Coefficient =
Target
(AVG Pixel Value ) - FPN
i
i
i
The calcu lation is p erform ed for all
sensor pixels bu t w arnings are only
ap p lied to p ixels in the region of
interest. This algorithm is u sefu l for
achieving u niform ou tp u t across
m u ltip le cam eras.
4
= This algorithm is the sam e as 2 w ith
the excep tion that it only calcu lates
PRN U for the p ixels w ith in the cu rrent
Region of Interest (ROI).
The second p aram eter is the target
valu e to u se in a range from
4096
to
16220
DN .
5
= Calcu lates the PRN U coefficients
and Digital gains u sing the entered
target valu e as show n below :
Target valu e (14 bits) in range from
4096 to 16220DN
For exam p le, if the cam era is in 8 bit
m od e and the target is to be 200DN , u se
(200x64) = 12800 (14 bit equ ivalent) as
target valu e.
The calcu lation is p erform ed for all
sensor pixels bu t w arnings are only
ap p lied to p ixels in the region of
interest. This algorithm is u sefu l for
achieving u niform ou tp u t across
m u ltip le cam eras. It is im p ortant to note
that the target valu e (set w ith the next
p aram eter) d oes not need to be equ al of
higher to the highest p ixel across all
cam eras. Since the cp a 5 fu nction now
controls gain, negative gain valu es m ay
also be set au tom atically. The id eal
resu lt of CPA 5 is that the PRN U
coefficients and the cam era gain are
setu p au tom atically.
6
= Calcu lates the PRN U coefficient and
the Digital gains in the sam e w ay as
cpa
5
w ith the excep tion that this com m and
only calcu lates PRN U for p ixels w ithin
the cu rrent Region of Interest (ROI).
* CPA 5 or 6 are recom m end ed for u se.
CPA 2 and 4 are available, bu t u sing
them m ay cau se you r cam era to
p erform contrary to its sp ecifications.
