On this tab, you can configure the HDR mode settings for your uEye camera. For uEye cameras with logarithmic HDR sensor see chapter Functionality of the uEye HDR sensor.

The HDR mode with knee points is only supported by the models UI-122x/UI-322x/UI-522x, UI-313xCP/UI-513x, and UI-314x/UI-514x.

Fig. 129: uEye properties - HDR

By exposing the sensor cells in two or three phases, the "HDR (High Dynamic Range)" function enhances dynamics during image capture. This means that very bright and very dark image parts are displayed in one image without causing overexposure.

•On
Enables the HDR mode.

•Number of kneepoints
In this drop down box, you can choose whether the HDR curve should have one or two definable knee points.

•Time/Brightness
The x value of a knee point indicates the first phase in percent of the currently set exposure time. The y value gives the proportion of maximum pixel intensity for this phase in percent.

For color cameras of types UI-122x-C, UI-322x-C and UI-522x-C, the RGB gain controls must be set to the same values to ensure accurate color rendition in HDR mode.

Using automatic brightness control in HDR mode may lead to short-term brightness fluctuations caused by the sensor. To determine the optimum knee point coordinates, we recommend operating the camera at a medium frame rate. A high frame rate reduces the time frame for post-exposure.

Resetting the parameters

Click on the "Default" button to reset all parameters to the model-specific defaults.