Basler A400K, User Manual

Page: 68 / 176

Basic Operation and Features
3-16 Basler A400k
DRAFT
Enabling DSNU Shading Correction
Once you have a DSNU shading table in place you can enable and use DSNU shading correction.
With the DSNU correction feature enabled, the camera will use the set of shading values to apply
the appropriate offset to each pixel to correct for DSNU.
You can enable DSNU shading correction with the Camera Configuration Tool Plus 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 Camera Configuration Tool Plus (see Section 4.1 ), you set the Shading Mode parameter
in the Shading Correction parameters group to enable DSNU shading correction.
By Setting CSRs
You can enable DSNU shading correction by writing a value to the Mode field of the DNSU and /
or PRNU Shading Correction Enable CSR (see page
4-24 ).
Section 4.2.2 explains CSRs. Section 4.3.1 explains using read/write commands.
Saving a Set of DSNU Shading Values to a File
When you generate a set of DSNU shading correction values, the values are placed in the
camera’s volatile memory and they overwrite any shading values that are already in the memory.
The current set of values in the volatile memory is used immediately by the camera. Values placed
in the camera’s volatile memory are lost if the camera is reset or the camera power is switched off.
A400k cameras can save the current DSNU values in the volatile memory to a file in the camera’s
non-volatile memory. Files saved in the non-volatile memory are not lost at reset or power off. You
can save only one set of DSNU values to file in the non-volatile memory. A save will take
approximately two minutes.
You can save the current shading values to a file in the non-volatile memory by using 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 4.1 ), you use the Create DSNU Shading Values File parameter in the
DSNU Shading Value File parameters group to save the DSNU shading set currently in the volatile
memory to a file in the non-volatile memory.
By Setting CSRs
You can save the current shading correction values to a file in the non-volatile memory by writing
values to the bulk data CSR for DSNU shading values.
Section 4.2.3 explains the bulk data CSRs and explains how to use the CSRs to save the shading
values to a file. Section 4.3.1 explains using read/write commands.
L
If you save the set of DSNU values to a file, enable the use of shading correction,
and save the current work set to your standard user set, the camera will automati-
cally load and use shading correction at next power on. Loading will take approxi-
mately 25 seconds. After 25 seconds, the camera will start image capture and be
able to receive commands.