Specifications

Advanced parameters and commands
Pearleye Technical Manual V2.3.0
53
The parameter M defines the offset value that is added to each pixel if the
background correction is activated. Depending on settings of parameter j, M is
automatically set to the mean value of the background image, provided that the
background image acquisition is done with the automatic calibration function
(k).
In this way it is possible to preserve the constant component of the image irre-
spective of the background correction’s activation state. Integrating a new
background correction image with the command U does not modify M. Only
the 12 (14) most significant bits of this 16 bits value are relevant.
The following table reveals the bit order:
Example
Set the background correction offset to 291 = 0x123
>M=1230[CR]
Bit position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Value (12-bit)
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
----
a0
Value (14-bit)
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
--
a0
Table 22: U and M: bit usage
GigE Vision feature name Description
BGC_OperationMode Operation mode of the background correction.
(U=<value> command)
While reading this feature the MSB shows the state of the
integration process.
(0=Idle, 1=Busy)
BGC_OffsetValue Offset value for the background correction.
(M=<value> command)
Table 23: Camera special feature: BackgroundCorrection