Basler Vision Technologies Sprint Series, User Manual

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Features
122 Basler sprint Mono Cameras
The second shading values file is called the "usershading" file. This file can also hold a complete
collection of the values needed to perform both DSNU and PRNU shading correction. The values
stored in this file must be generated by the camera user while the camera is operating under its real
world conditions. This file contains the shading values that will normally be used for day-to-day
camera operation. A procedure describing how to generate the values in this file appears on the
next page.)
Guidelines When Using Shading Correction
When using the shading correction feature, make sure to take the following guidelines into account:
„
Any time you make a change to the optics or lighting or if you change the camera’s exposure
mode or exposure time, you must generate a new set of user PRNU shading values. Using out
of date PRNU shading values can result in poor image quality.
6.3.1 Enabling Shading Correction
You can enable shading correction with the Camera Configuration Tool Plus (CCT+) or by using
binary read/write commands from within your own application to set the camera’s control and status
registers (CSRs).
With the CCT+
With the CCT+ (see Section 7.1 on page 156 ), you use the Shading Mode parameter in the DSNU
and PRNU Shading Correction parameters group to enable shading correction. You can enable,
DRNU correction only, PRNU correction only, or both DRNU and PRNU correction.
By Setting CSRs
You enable shading correction by writing the appropriate value to the Mode field of the Shading
Mode CSR (see
page 178 ).
Section 7.2.2 on page 164 explains CSRs and Section 7.3.1 on page 197 explains using read/write
commands.