Hi all, I use the Denoise function of ants to denoise my data (DenoiseImage(1) — ants — Debian experimental — Debian Manpages). I saw that it is possible to extract the estimated noise map (-o [correctedImage, estimatedNoise]). This algorithm is based on the filter developed by Manjón et al. (https://onlinelibrary.wiley.com/doi/10.1002/jmri.22003). From the paper, I understand that the noise/variance is calculated based on the Euclidean distance of two noisy patches in the Diff volume. The Diff volume is the difference between the original noisy scan and a low pass-filtered volume. Am I correct in interpreting that we can safely compare and pool estimated noise maps from different scans/studies (No normalization is needed)?