Ring artifact and Poisson noise attenuation via volumetric multiscale nonlocal collaborative filtering of spatially correlated noise

Journal of Synchrotron Radiation Journal of
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Figure 3
The full denoising process, requiring as inputs the noisy projections P_raw and the bright- and dark-fields I_B, I_D, (1)

and producing as the output an estimate $[\widehat{\ln(A)}]$ (30)

of the underlying stack of projections ln(A) (3)

. As an intermediate output, an estimate $[\hat{Y}]$ (12)

of the streak-free yet noisy stack of projections Y (5)

is also produced.

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