V4L2 controls vs. GeniCam features
59
Alvium CSI-2 Cameras User Guide V1.1.0
Gain
GenICam features and Alvium CSI-2 cameras make no difference between analog
and digital gain
.
White balance and balance ratio
V4L2 and GenICam offer different concepts for color balance: white balance and
separate balance for blue and red.
Description
V4L2 controls (= Control IDs)
SFNC features,
non-SFNC
Feature |
Data type: (Options)
Gain is set manually.
V4L2_CID_GAIN
Gain |
Float
Gain is set automatically.
V4L2_CID_AUTOGAIN
(Active continuously)
GainAuto |
Enumeration: Once, Continuous, Off
Table 29: Using Gain
Description
V4L2 controls (= Control IDs)
SFNC features,
non-SFNC
Feature |
Data type: (Options)
White balance is set once automatically.
Afterwards, settings are maintained.
V4L2_CID_DO_WHITE_BALANCE
Action control
BalanceWhiteAuto |
Enumeration: Once
White balance is adjusted continuously.
V4L2_CID_AUTO_WHITE_BALANCE
BalanceWhiteAuto
Enumeration: Continuous
The blue color channel is balanced.
V4L2_CID_BLUE_BALANCE
BalanceRatioSelector:
Enumeration: Blue
BalanceRatio: The value is set
The red color channel is balanced.
V4L2_CID_RED_BALANCE
BalanceRatioSelector:
Enumeration: Red
BalanceRatio: The value is set
Table 30: Using Balance ratio and Hue
