Spyder3 SC-34 Color Camera User's Manual
35
Teledyne DALSA
03-032-20116-01
3.6 Data Processing
Setting a Region of Interest (ROI)
Pu rp ose:
Sets the p ixel range u sed to collect the end -of-line statistics and sets the region of p ixels
u sed in the
gl
,
gla
, and
ccf
com m and s.
In m ost ap p lications, the field of view exceed s the requ ired object size and these
extraneou s areas shou ld be ignored . It is recom m end ed that you set the region of interest
a few p ixels insid e the actu al u seable im age.
Syntax:
srx i
srw i
Syntax Elem ents:
srx i
Starting x p osition of the ROI, in a valu e of
1
to
sensor resolution
.
srw i
Wid th of the ROI, in a valu e of
1
to
sensor resolution
.
N otes:
To retu rn the cu rrent region of interest, u se the com m and s
gcp
or
get
srx, get srw
.
Related Com m and s
gl, gla, ccf, cp a, els
3.7 Analog and Digital Signal Processing Chain
Processing Chain Overview and Description
The following diagram shows a simplified block diagram of the camera‘s analog and digital processing
chain. The analog p rocessing chain begins w ith an analog gain ad ju stm ent, follow ed by an analog offset
ad ju stm ent. These ad ju stm ents are ap p lied to the vid eo analog signal p rior to its d igitization by an A/ D
converter.
The d igital p rocessing chain contains the FPN correction, the PRN U correction, the backgrou nd su btract,
and the d igital gain and offset. N on-linearity look-u p table (LUT) correction is available for the 4k m od el
of cam era.
All of these elem ents are u ser p rogram m able.
Figu re 19: Signal Processing Chain
Analog Processing
Digital Processing
Analog video
Analog
gain
FPN
coefficients
PRNU
coefficients
Background
subtract
Digital system
gain
sag,ccg
ccf
ccp
ssb
ssg
eil
LUT
addition
edc, sdc
Pixel defect
correction
sgr, cwb
Gain
relative
scc
Color
correction
Digital video
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