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Flare 12M CXP User's Manual
enable tracking white balance.
The white balance multipliers registers are automatically updated every frame, and can be
queried while the feature is running.
The Tracking White Balance Speed register is used to control the magnitude of the multiplier
changes, reaction time and convergence time. The speed command range is from 0x0
(slowest) to 0x3 (fastest). The default speed setting is 0x2.
3.7 Auto Exposure Control (AEC)
The Flare 12M180 cameras have advanced auto exposure and gain control. The AEC block
can be used to automatically adjust the camera's response in dynamic lighting environments
by changing the exposure time and/or digital gain settings based on the calculated average
image luminance compared to a user programmable target. The luminance value is
calculated according the ITU-R BT.709-5 recommendation.
Table 15 shows the registers used to control the AEC block.
Register
Description
AEC Minimum
Exposure
Minimum exposure time.
Range = (
Minimum Exposure 1
,
Maximum
Exposure 1
).
AEC Maximum
Exposure
Maximum exposure time.
Range = (
AEC Minimum Exposure
,
Maximum Exposure 1
).
AEC Minimum Digital
Gain
Minimum gain value.
Range = (
0x0001
,
0x3FFF
).
AEC Maximum Digital
Gain
Maximum gain value.
Range = (
AEC Minimum Digital Gain
,
0x3FFF
).
AEC Target
Target luma value.
Color camera luma calculated according to:
Y = 0.2126R + 0.7152G + 0.0722B
AEC Area
Area used for calculations.
0 – full image
1 – enabled zones
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Revision 2.0
