Normalized median filter is added to OpenPIV.

[Ivan Nepomnyashchikh]

Hello, dear OpenPIV users.

We have added normalized median filter to OpenPIV. It is added as both the stand alone function validation.local_norm_median_val() (the pull request is merged) and as a part of windef.py (waiting for Dr. Liberzon to merge the pull request). If you want to use it as a part of windef.py, just set the median_normalized setting to True. By default it is False and uses the original (not normalized) median filter. I.e., you can use either one of them, but not both.

A tutorial jupiter notebook showing the difference between the regular and normalized median filters (used as stand alone functions) is titled compare_median_filters.ipynb is added to openpiv-python-examples (waiting for Dr. Liberzon to merge the pull request).

Ivan