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Piranha HN RoHS User Manual
Setting a Region of Interest
Purpose:
Syntax:
Syntax Elements:
Notes:
Related Commands
Example:
Digital Signal Processing Chain
Processing Chain Overview and Description
The following diagram shows a simplified block diagram of the camera's digital processing chain.
The digital processing chain contains the FPN correction, the digital gain, the PRNU correction, the
background subtract, and the system gain and background addition. All of these elements are user
programmable.
Notes
:
FPN and PRNU correction is not available when operating the camera in Area Mode. For details on
•
how to switch camera operation modes, refer to
The following user settings are stored separately for forward and reverse direction: digital gain,
•
digital offset, and background subtract. They are saved using the
FPN and PRNU coefficients are stored separately for forward and reverse direction. To save the
•
current PRNU coefficients, use the command
command
. Settings are saved for the current direction only.
wfc
Teledyne DALSA
Sets the pixel range used to collect the end-of-line statistics and sets the region of pixels
used in the ccg, cpa, gl, gla, and ccf commands.
In most applications, the field of view exceeds the required object size and these
extraneous areas should be ignored. It is recommended that you set the region of
interest a few pixels inside the actual useable image.
roi x1 y1 x2 y2
x1
Column start number. Must be less than or equal to the column end number in a
range from 1 to (column resolution – 1).
y1
Row start number. Must be less than or equal to the row end number in a range
from 1 to (row end number – 1) except in TDI Mode where y1 must be 1.
x2
Column end number. Must be greater than or equal to the column start number in
a range from 2 to column resolution.
y2
Row end number. Must be greater than or equal to the row start number in a range
from 2 to number of stages except in TDI Mode where y2 must be 1.
If you are using binning, the start pixel is rounded down to the beginning of
•
binned area and end pixel is rounded up to the end of the binned area.
•
In Area Mode, the roi must be within the stage. If the requested roi is above the
stage, the roi rows will be clipped. The start and end rows will be clipped to the
stage selection if necessary. A "clipped to max" warning message is returned.
ccg, cpa, gl, gla, ccf
roi 10 1 50 1 (TDI Mode)
Setting a Region of
Interest.
wus
. To save the current FPN coefficients, use the
wpc
command.
03-032-20135-00
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