IDS Software Suite 4.96.1
Sensor, pixel clock, gain
•USB 2.0 camera: The color version has no hardware gain controls. The driver of the USB 2.0 camera simulates these during color conversion. Therefore, the RGB gain controls have no effect in raw Bayer mode.
•Extreme overexposure may shift the black level. As an effect, the whole dynamic is reduced and the white level is no longer reached.
•IR illumination from 900 nm generates pixel-caused 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.
•The master gain controls have no effect for values >96.
•Changes on the capturing parameters (such as exposure or gain) only have an effect on the image after the next which is caused by the sensor. This is independent of the operating mode.
•With long exposure time and high gain the lower image lines are brighter and show more hot pixels. This is caused by the global shutter memory on the sensor.
•At exposure times > 500 ms and in combination with a high gain the lower left corner of the image gets much brighter. This is caused by a local heat source on the sensor.
•When using hardware auto-exposure and trigger mode with a trigger rate less than 1 Hz this may cause adverse effects in image quality.
•Sensor brightness control: The sensor does not use the average image brightness value as the actual value for brightness control. Instead, it calculates a sensor-internal value 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).
Binning and AOI
•Sensor speed does not increase for AOI width <608 pixels (constant image height).
•The sensor binning works by averaging pixels. With activated binning the image will not become brighter as usual but the image noise is reduced.
•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.
•The pixel clock must be a minimum of 8 MHz for 2x binning and a minimum of 16 MHz for 4x binning.
•The color version of the sensor also performs only monochrome binning. So the color information will be lost in binning mode.
HDR mode
•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 otherwise the dynamic range cannot be used.
Black level
•The black level is higher with inactive auto black level function than with active auto black level function.
•With high gain and activated binning, the black level can shift which is caused by the sensor.
•The sensor's auto black level function tries to keep the black level in the image relative to the origin. This automatic control has a range. When activating and afterwards de-activating the master gain the black level is inappropriately in the upper target range. When using gamma the image seems colorless.
To get the black level to zero, the sensor internal control must be reset temprorary. This can be done with the hardware gamma function. Enable this function, wait a second and disable it again.
USB uEye LE Rev. 2
•It is not recommended to use USB uEye LE Rev. 2 cameras with high pixel clocks under Linux Embedded. Operate the camera with reduced pixel clocks.
