Data Processing; Processing Chain Overview And Description - Dalsa Piranha 3 Series User Manual

Piranha 3 User Manual
3.3.3 Setting a Pretrigger
Purpose:
Syntax:
Syntax Elements:

3.4 Data Processing

3.4.1 Setting a Region of Interest (ROI:setting)
Purpose:
Syntax:
Syntax Elements:
Notes:
Related Command s
Example:
3.4.2 Analog and Digital Signal Processing Chain

Processing Chain Overview and Description

The follow ing d iagram show s a sim plified block d iagram of the cam era's analog and
d igital processing chain. The analog processing chain begins w ith an analog gain
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Some framegrabbers require a small amount of time (several
pixels) to acquire d ata from a camera. Pretrigger allow s the
framegrabber set up time by send ing the LVAL signal high several
pixels earlier than valid d ata.
spt i
i
Pretrigger in a range from 0 to 16.
Sets the pixel range used to collect the end -of-line statistics and sets
the region of pixels used in the ccg, cao, gl, gla, ccf, ccp, and
cpa
command s.
In most applications, the field of view exceed s the required object
size and these extraneous areas should be ignored . It is
recommend ed that you set the region of interest a few pixels insid e
the actual useable image.
roi x1 y1 x2 y2
x1
Pixel start number. Must be less than the pixel end number in a
range from 1 to sensor resolution.
y1
Column start number. Since the Piranha 3 is a line scan camera,
this value must be 1.
x2
Pixel end number. Must be greater than or equal to the pixel
start number in a range from 2 to sensor resolution.
y2
Column end number. Since the Piranha 3 is a line scan camera,
this value must be 1.

To return the current region of interest, use the command s
get
or
ccg, cao, gl, gla, ccf,
roi 10 1 50 1
roi.
ccp,els
33
gcp
03-032-10216-06