Dalsa PC-30-02K80-R, Руководство пользователя

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Piranha Color Camera User’s Manual 45
DALSA 03-032-10211-03 9/27/2007
select the color or colors you want to adjust. This allows
you to limit the calibration to a single color.
•
Perform all analog and digital adjustments before
performing FPN correction.
•
Perform FPN correction before PRNU correction.
To save FPN coefficients after calibration, use the
wfc
command.
Related Commands:
ccp, wfc
Example:
ccf
Setting a Pixel’s FPN Coefficient
Purpose: Sets an individual pixel’s FPN coefficient.
Syntax
sfc x i
Syntax Elements:
x
The pixel number from
1
to
sensor pixel count
.
i
Coefficient value in a range from
0
to
4095
(12 bit LSB).
Notes: Before sending this command, use the
scl
command to select the
color you want to adjust.
Example:
sfc 10 50
Setting a Range of FPN Coefficients
Purpose: Sets a range of pixel FPN coefficients.
Syntax
sfr x x i
Syntax Elements:
x
The first pixel number of the range.
x
The last pixel number of the range.
i
Coefficient value in a range from 0-2048.
Notes: •
Before sending this command, use the
scl
command to
select the color you want to adjust.
The first pixel of the range must be less than the last.
Example:
sfr 1 100 80
PRNU Calculation
Performing PRNU to a user entered value
Purpose: Calculate the PRNU coefficients to eliminate the difference in
responsivity between the pixels, thereby creating a uniform response
to light. Using this command, you must provide a calibration target.
Syntax:
cpa i1 i2
Syntax Elements:
i1
PRNU calibration algorithm to use:
1
= This algorithm first adjusts each tap’s analog gain so that
8-13% of pixels within a tap are above the value specified in
the target value parameter. PRNU calibration then occurs using
the peak pixel in the region of interest.
This algorithm is recommended for use only when FPN is