Operation and Features
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Saving a Set of Shading Values to a File
You can save the DSNU and PRNU shading values currently in the volatile memory to a file in the
non-volatile memory 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 4.1), you use the Create Shading parameter in the Shading Value
File parameters group to save the DSNU and PRNU shading values currently in the volatile
memory to a file in the non-volatile memory.
By Setting CSRs
You can save the DSNU and PRNU shading values currently in the volatile memory to a file in the
non-volatile memory by writing values to the bulk data CSR for 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.
3.10.1.5 “Activating” Saved DSNU and PRNU Shading Correction Values
As explained in Section 3.10.1.4, you can save a set of DSNU and PRNU shading values to a file
in the camera’s non-volatile memory. Once you have saved a set of shading values to a file, you
can choose to “activate” the saved file. When you activate the saved shading value file, two things
happen:
• The DSNU and PRNU values from the saved file are copied into the camera’s volatile mem-
ory. If you have shading correction enabled, the camera will now use the shading values that
were copied into the volatile memory.
• A link is created between the saved file and the volatile memory. The DSNU and PRNU
shading values from the activated saved file will automatically be copied into the volatile
memory whenever the camera is powered up or reset.
Activating a Saved Shading Value File
You can activate a saved shading value file with the Camera Configuration Tool Plus (CCT+) or
by using binary read/write commands from within your own application to set the camera’s bulk
data control and status registers (CSRs).
With the CCT+
With the CCT+ (see Section 4.1), when you use the Create Shading parameter to save the
shading values to a file, the saved file is automatically activated.
By Setting CSRs
You activate a saved shading value file by writing values to the bulk data CSR for shading values.
Section 4.2.3 explains bulk data CSRs and using the bulk data activate process. Section 4.3.1
explains using read/write commands.
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