BM-141GE / BB-141GE
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Related registers and settings for Full Auto Exposure are shown the following table.
Register Display in SDK
Value
Setting for Full Auto Exposure
0xA034
Auto iris Lens Control
Signal output
0=OFF
1=ON
1=ON(Default)
0xA000
Shutter mode
0= Preset shutter
1=Programmable exposure
2=Exposure TimeAbs
3=CCD iris
3=CCD iris
0xA0B0
AGC select
0=OFF, 1=ON
1=ON
The automatic functions used for Full Auto Exposure can be configured in various ways to
support different application requirements. The table below shows combinations and functions.
Auto Iris Lens Control Signal output = ON (Default)
AGC
ON
OFF
Auto
Shutter
ON
Full Auto Exposure operation
Auto S Lens Iris
OFF
Lens iris + AGC
Only Lens Iris
Auto Iris Lens Control Signal Output = OFF
AGC
ON
OFF
Auto
Shutter
ON
AGC + Auto Shutter
Only Auto Shutter
OFF
Only AGC
No Auto functions available
9.3. Pre-process functions
BM-141GE/BB-141GE is provided with several pre-processing functions. The output from the
camera is selectable to 8, 10 or 12-bit but video is digitized to 14 bits quantization.
The pre-processing functions make use of the 14 bit video. Featured functions are: Bayer
color white balance, R/L channel balance, blemish compensation, gain control and LUT (Look
Up Table) for Gamma and Knee correction.
9.3.1 Bayer White Balance (BB-141GE only)
Normally, the raw Bayer color signals are sent to the host as they are. In the host, the signals
are interpolated to generate an RGB image and perform white balance.
In order to offload the host, the BB-141GE can adjust Gr, R, Gb and B levels individually to
get the white balance for the Bayer output signal. The gain is fixed to 1.0 for BM-141GE.
BB-141GE has Manual white balance, One-push Auto white balance, Continuous Auto white
balance and Preset white balance of 3200K, 4600K and 5600K.
Note: Bayer white balance must be set at Normal mode.
9.3.2 Automatic Gain Control
This is the function to keep a constant output level in accordance with ambient brightness
changes. The range of AGC as well as manual adjustment is -6dB to 24 dB.
This function set AGC ON or OFF.
Note: This is available only in Normal mode.