Known Issues

- Effect of single precision in calculating quality metrics.

NoRMCorre predominantly uses single precision arithmetic to reduce memory and computation overload. While we have not observed any loss of accuracy in terms of determining and correcting for motion due to single precision, we have noted that in Matlab versions 2017a or earlier, the correlation with mean metric can be inaccurate for large FOVs. It's recommended to use version 2017b or later. If that's not possible you may consider changing line 64 in motion_metrics.m to use double precision arithmetic. Thanks to user @vd2309 for pointing this out.