pyFAI-average(1) image preprocessing tool


usage: pyFAI-average [options] [options] -o output.edf file1.edf file2.edf ...

This tool can be used to average out a set of dark current images using mean or median filter (along the image stack). One can also reject outliers be specifying a cutoff (remove cosmic rays / zingers from dark)

positional arguments:

Files to be processed

optional arguments:

-h, --help
show this help message and exit
-V, --version
show program's version number and exit
-o OUTPUT, --output OUTPUT
Output/ destination of average image
-m METHOD, --method METHOD
Method used for averaging, can be 'mean'(default) or 'min', 'max', 'median', 'sum', 'quantiles'
-c CUTOFF, --cutoff CUTOFF
Take the mean of the average +/- cutoff * std_dev.
-F FORMAT, --format FORMAT
Output file/image format (by default EDF)
-d DARK, --dark DARK
Dark noise to be subtracted
-f FLAT, --flat FLAT
Flat field correction
-v, --verbose
switch to verbose/debug mode
average out between two quantiles -q 0.20-0.90

It can also be used to merge many images from the same sample when using a small beam and reduce the spotty-ness of Debye-Sherrer rings. In this case the "max-filter" is usually recommended.