V4L2 controls vs. GeniCam features
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Alvium CSI-2 Cameras User Guide V1.1.0
Value changes by controls interdependencies
The conversion between time and clock cycles affects control values. Controls for
pixel format, bandwidth, cropping (region of interest), frame rate, and exposure
time are related to each other. Changing values for one control can change values
for another control. For example, frame rates can be reduced when the pixel
format is changed subsequently.
shows the interdependencies.
Effects for the related controls
Changing one control's value affects other control's values, such as:
•
Hight value is changed.
•
A changed Height value may affect other values, such as for Frame Rate and
Exposure Time.
We recommend you to consider:
•
The more controls you adjust, the more current values deviate from previously
set values.
•
The same effects that apply to exposure time, apply to auto exposure, too.
•
To avoid readjustments, follow the order displayed in
Figure 19: Interdependencies between controls
CSI-2 Lane Count
CSI-2 Clock
Exposure Time
Bu
ī
er Size
Height
O
ī
set Y
MIPI Data Format
Exposure Auto
Gain Auto
Gain
White Balance Auto
Red Balance Ra
Ɵ
o
Blue Balance Ra
Ɵ
o
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