On this tab, you can set parameters for automatically adjusting the white balance of your uEye camera (see also Automatic Image Control).

Figure 116: uEye properties - AWB

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This tab is only available if a color camera is opened in the uEye Demo.
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Every light source has a specific color temperature. Images captured with a camera can have a reddish (low color temperature) or bluish hue (high color temperature), depending on the color temperature of the light. This hue can be corrected by white balancing.
To carry out white balancing, aim the camera at a surface of a uniform gray color. You can perform white balancing either manually with the RGB gain control or by using the uEye's Auto White Balance (AWB) function.
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Image white balance
• | Drop down list (only USB uEye XS)
Shows a list of predefined white balance modes |
▪ | Auto: Sensor automatically determines auto white balance |
▪ | Gray world: Sensor automatically determines auto white balance using the Gray World algorithm. This algorithm assumes that the average color value in the scene is gray. |
▪ | Bulb: Sensor sets auto white balance to incandescent light |
▪ | Fluorescent: Sensor sets auto white balance to fluorescent light (daylight type) |
▪ | Sunny: Sensor sets auto white balance to direct daylight |
▪ | Cloudy: Sensor sets auto white balance to cloudy sky |
• | Enable
Activates automatic white balance. |
• | Run once
Select this check box to automatically disable the adjustment functionality as soon as the target value is reached. |
• | Red offset/Blue offset
With these sliders you can manually adjust the red and blue content of the image. |
• | Gain min
With this slider you can set a basic gain value for white balancing. Color cameras without master gain can emulate this base value by using the Gain min value set for AWB. |
• | Gain max
Upper adjustment limit. |
• | 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).
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Default
Click this button to reset all parameters to the model-specific defaults.