DFK 33UX252 Technical Reference Manual
23
Camera Controls
5.3
Automatic Exposure and Gain Control
The DFK 33UX252 camera can automatically control gain and exposure time. These
automatic functions are enabled by default.
In order to optimize image parameters, a region of interest can be specified for
automatic functions. Specifying a region of interest enables fine-grained control over
the image area for which the image parameters are optimized. A selection of pre-
defined area presets is available, but the user can also specify the coordinates of a
custom rectangle.
In certain situations, it is desirable to limit the range of the auto-controlled parameters.
For example, one might want to avoid high gain settings in order to keep noise levels
low. Other applications require limiting the maximum exposure time so that
movements do not get blurred. Therefore, the ranges of the gain and exposure
parameter can be limited.
If both auto exposure and auto gain are active, the camera tries to lower the gain value
in order to reduce noise and improve the image quality.
5.3.1
Auto Exposure
Parameter
Auto Exposure
Continuous
Enable Auto Exposure
True
Off
Disable Auto Exposure
False
USB3 Vision: GenICam
ExposureAuto
Video4Linux2
Auto Shutter
VCD Property
VCDID_Exposure\VCDElement_Auto
5.3.2
Auto Gain
Parameter
Auto Gain
Continuous
Enable Auto Gain
True
Off
Disable Auto Gain
False
USB3 Vision: GenICam
GainAuto
Video4Linux2
Auto Gain
VCD Property
VCDID_Gain\VCDElement_Auto
