Any ideas for how to find out how this function works?

enter image description here

Combines differently exposed images of the same scene into a single image with overall good exposure.

I'm writing a physics paper that involves this function in some code. I cannot explain how this function works mathematically.

The act of combining differently exposed images seems like a common task in image processing.

If you can point me to a paper that gives a mathematical description of what this function may be doing or if you know of a similar function in an open source language that would help me greatly.

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    $\begingroup$ You will need to ask Wolfram Support. $\endgroup$ – MarcoB Jun 8 '18 at 14:32
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    $\begingroup$ The code for this function can be inspected using GeneralUtilities`PrintDefinitions[ImageExposureCombine]. You will see that it calls the OpenCV function corresponding to the options given, for example MergeRobertson. There are some references given in the OpenCV documentation. $\endgroup$ – C. E. Jun 8 '18 at 14:33