Hi Klaus:

Recently, I have been focusing on Compensation Principle.

In Compensation Principle III , you mentioned it's for "local unsharpness",
however in the paperNew Compensation Principles for enhanced image quality in industrial radiology with Digital Detector Arrays, above fig.6, "The interpolation of bad pixels can reduce the contrast of very small indications ",

So it seems that compensation principle III is for contrast loss (caused by calibration of bad pixel), instead of unsharpness.

Almost all of the DR standards said compensation principle III is for "local unsharpness", so why is unsharpness?

Hi Klaus:

Since CNR=C*SNR, and when the voltage increases, the C will decrease and SNR will rise.

Maybe the CNR could be rewritten as a function of the voltage, and the best CNR can be calculated by the derivative of voltage in that function.

So, has this work been done :'( ?
I think how to set a good voltage is quite useful.