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UI-122x / UI-522x Application Notes

uEye Camera Manual Version 3.80

UI-122x / UI-522x Application Notes

Hinweis

For the technical specifications of this model go to: Camera and Sensor Data > UI-122x / UI-522x.

Sensor, pixel clock, gain

The color version has no hardware gain controls. The driver simulates these.
The RGB gain controls have no effect in raw Bayer mode.
Sensor brightness control: The sensor does not use the average image brightness value as the actual value for brightness control. Instead, it uses a value calculated internally from the histogram. This value is defined with 12% of the pixels being brighter than the actual value.
Sensor brightness control: The permissible value range for the reference value is [44...235]. You cannot set any smaller values (down to black = 0) or higher values (up to white = 255).
Extreme overexposure may shift the black level. As an effect, the white level is no longer reached.
Functions that modify image content (such as exposure or gain) are applied with a delay of one frame time. This is also the case in trigger mode.
IR illumination with 900 nm causes blooming.
The hardware gamma function uses the sensor's companding mode with a piecewise linear characteristic. When using RGB gains on the color version of the camera, hardware gamma may lead to a non-linear color representation.

Binning, AOI, HDR mode

Sensor speed does not increase for AOI width <608 pixels (constant image height).
The sensor binning works by averaging pixels, so the image will not become brighter when binning is activated.
The frame rate is not significantly higher with horizontal 4x binning than with 2x binning.
With horizontal 4x binning, a dark column appears at the right-hand image border, which is caused by the sensor.
For sensor reasons, the (black level) offset cannot be modified when HDR mode is active.
Master gain and gain boost should be disabled when using HDR mode.

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