On this tab, you can set parameters for automatically adjusting the exposure time and sensor gain of your uEye camera (see also Automatic Image Control).

Figure 115: uEye properties - AES/AGC

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• | Auto Exposure Shutter (AES) automatically adjusts image brightness based on the exposure shutter setting. Long exposure times may cause motion blur. |
• | Auto Gain Control (AGC) automatically adjusts image brightness based on the hardware gain control setting of the camera sensor. You can activate this function in addition to AES if ambient light conditions are poor. High gain settings may cause artefacting. |
• | Auto Frame Rate (AFR) adjusts the frame rate to allow longer exposure times (see also Pixel Clock, Frame Rate and Exposure Time). Selecting this check box might decrease the frame rate substantially. This function is only available when AES is active. |
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The sensor's auto features are supported by the sensors of the following camera models.
Please also read the notes on using these sensors.
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Image contrast
Use the following settings to configure automatic brightness control:
• | Exposure (AES)
Select this check box to automatically adjust the image brightness based on the exposure shutter setting. |
• | Framerate (AFR)
Select this check box to adjust the frame rate in such a way that the exposure shutter is optimized. This option is only available when AES is active. |
• | Gain (AGC)
Select this check box to automatically adjust the image brightness based on the gain setting. |
• | Run once
Select this check box to automatically disable the adjustment functionality as soon as the target value is reached. |
• | Use sensor auto features
If your sensor offers automatic image brightness adjustment, you can select this check box to enable the feature. |
• | Brightness reference
Default average grayscale value (brightness) of the image. |
• | Exposure limit
Sets the upper limit for the exposure time. Gain control is activated as soon as the upper limit of the exposure time is reached.
The maximum value for automatic exposure time control is linked to the camera settings. If the maximum possible exposure time value has changed, e.g. through changes in the timing parameters, then this value is applied as the maximum Auto Exposure value. Set values that are less than the maximum value are not affected. |
• | Gain limit
Sets the maximum gain limit. On reaching the lower limit (gain = 0), the exposure time adjustment range is activated. |
• | Speed
Sets the adjustment speed. The higher the speed control is set, the faster the adjustment. Setting the speed control to 0 disables the adjustment functionality. |
Histogram area
The histogram area specifies which area of the image will be used for calculating the average grayscale value of the image.
You can set the size of the histogram area by using the tools on the toolbar (see Toolbar).
Default
Click this button to reset all parameters to the model-specific defaults.
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