AW00118508000 Features
Basler racer Camera Link 130
If you use direct register access, set the value of the Offset Shading Create register to OnePush.
8. Perform line acquisitions until the Create value changes to Off or until the Offset Shading
Create register value changes to Off.
The "usershading" file is automatically created. It is stored in the camera’s non-volatile memory.
Creating a "Usershading" File for Gain Shading Correction
The generation of a "usershading" file requires a certain minimum number of line acquisitions.
Higher line rates require larger numbers of line acquisitions to reach the minimum number.
When the minimum number is reached, the "usershading" file is automatically created. It is stored
in the camera’s non-volatile memory and is not lost if the camera power is switched off.
The Create value and the value of the Gain Shading Create register (see below) change to Off when
the minimum number of line acquisitions is reached.
Hint: To ease acquisition of the required number of lines Basler recommends to set the line start
trigger mode to Off for automatic line start triggering.
Example: At a line acquisition rate of 100 Hz or less, a new "usershading" file will generally have
been generated by the time approximately 2300 line acquisitions have occurred.
1. Adjust the lighting, optics, line rate, exposure time control mode, exposure time, gain, and
camera temperature as you would for normal operation.
2. Make sure Exposure Auto and Gain Auto are disabled.
3. Place a uniform white target in the field of view of the camera. Make sure the target covers the
entire field of view.
4. Set the camera’s OffsetX and Width parameters so that the entire width of the sensor lines will
be used during line acquisition.
Any time you make a change to the line rate, exposure time control mode,
exposure time, gain, or camera temperature, you must create a new
"usershading" file for offset shading correction. Using an out of date "usershading"
file can result in poor image quality.
Creating a "usershading" file for gain shading correction will overwrite any
"usershading" file for gain shading correction that is already in the camera’s
memory.
If you want to preserve the previous "usershading" file save it to your computer
before creating the new "usershading" file.
For information about saving a "usershading" file to the computer, see
Section 8.9.3.2 on page 132.
To create a "usershading" file for gain shading correction:
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