Default Shading Set File And User Shading Set File; Creating A "Usershading" File - Basler Racer User Manual

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8.9.3 Default Shading Set File and
User Shading Set File
For each type of shading correction, two types of shading set files are available in the camera's
nonvolatile memory:
The first type of shading set file is called the "defaultshading" file. One "defaultshading" file is

available for offset shading correction and another one for gain shading correction.
A "defaultshading" file contains a complete collection of the values needed to perform either
offset shading or gain shading correction. The values in the files are generated during the
camera's factory setup procedure and they essentially serve as default shading correction
values. The values are optimized for performing shading correction with "standard" optics and
lighting. Using the factory values will give you reasonable shading correction performance in
most situations. One advantage of the factory values is that they serve as a good default. The
"defaultshading" files are in a protected area of the camera's memory and can't be changed.
The second type of shading set file is called the "usershading" file. One "usershading" file is

available for offset shading correction and another one for gain shading correction.
Like a "defaultshading" file, a "usershading" file also holds a complete collection of the values
needed to perform either offset shading or gain shading correction. The values stored in the files
must, however, be generated by the camera user. When the values are generated the camera
must operate under its real world conditions. The "usershading" files contain the shading
correction values that will normally be used for day-to-day camera operation. A procedure
describing how to generate the values in the files appears below.
"Defaultshading" files are always enabled. When "usershading" files are also
enabled, they will supplement the default shading correction by modifying the
default correction values.
8.9.3.1

Creating a "Usershading" File

To create a "usershading" file and enable it, you must take the steps listed below. Basler strongly
recommends that you read through all of the steps and read all of the other information in this
section before you attempt to do shading correction.
When you create a "usershading" file you must make sure to create correction values for all of the
pixels in the sensor's line regardless of how you plan to use the camera during normal operation.
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