Piranha HS-S0-06K Camera User Manual
03-032-20213-01
Teledyne DALSA
34
Subtracting Background
Pu rp se:
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. You shou ld try to m ake you r d arkest p ixel in the scene
equ al to zero.
Sytax
ssb i
Syntax Elem ents:
i
Su btracted valu e in a range in DN from 0 to 4096 (14 bit LSB).
N otes:
See the follow ing section for d etails on the
Related Com m and s
Exam p le
ssb 500
Setting System Gain
Pu rp ose:
Im p roves signal ou tp u t sw ing after a backgrou nd su btract . When
su btracting a d igital valu e from the d igital vid eo signal, u sing the
com m and , the ou tp u t can no longer reach its m axim u m . Use
this com m and to correct for this w here:
ssg value =
max output value
max output value - ssb value
Syntax:
ssg i
Syntax Elem ents:
i
Gain setting. The gain ranges are 0 to 61439. The d igital
vid eo valu es are m u ltip lied by this valu e w here:
System Gain=
i
4096
1 +
N otes:
Use this com m and in conju nction w ith the
(d escribed above).
Digital offset is set to zero after send ing the
Related Com m and s:
ssb, sab
Exam p le:
ssg 4500
Adding Background
Pu rp se:
Use the backgrou nd ad d com m and after p erform ing flat field
correction if you w ant to im p rove you r im age in a high contrast
scene. Use this com m and to increase the tru e black above 0 DN .
Sytax
sab i
Syntax Elem ents:
i
Ad d valu e in a range in DN from 0 to 4096 (14 bit LSB).
N otes:
See the follow ing section for d etails on the
ssg
com m and .
Related Com m and s
ssg, ssb
Exam p le
sab 500
