Dalsa Stop Action 4M30 User Manual page 40

40
Subtract
Purpose:
Syntax:
Syntax Elements:
Notes:
Related Commands:
Example
03-32-10121-09
PRELIMINARY
ing Background
Use the background subtract command if you
your image in a low contrast scene. It is us
process 8 bit dat
digital processing chain. You should try to make your darkest
pixel in the scene equal to zero.
ssb t i
t
Sensor tap selection. Allowable
taps.
i
Subtracted value in a range in DN from 0 to 511.
•
When subtracting a digital va ue from the digital video signal
the output can no longer reach its maxi
command to correct for this where:
ssg value =
See the following section for details on the
•
Entering a large value background will cause the camera to
digitally clip the output image.
ssg
ssb 0 25
a but want to take advantage of the camera's 10 bit
range is 1 to 2, or 0 for all
l
max output value
max output value - ssb value
4M Stop Action Camera Manual
want to improve
eful for systems that
mum. Use the
ssg
command.
ssg
DALSA