Batch Normalization?

[evwark]

I've been working on some solar time-lapse animations, combining several hundred still images into a video.  Unfortunately, because of the way the frames are generated, some tend to be brighter than others, and the end result is a sun that seems to flicker pretty badly.

I know PixInsight can normalize groups of images as part of its integration process... but is it possible to perform normalization as a stand-alone operation?  If the standard "Scale + Zero Offset" isn't available on its own, would it be possible to get the same effect out of Pixelmath?

Thanks in advance!

[georg.viehoever]

You would need to make the statistics of the images compatible to each other. Most likely, you can do this with a bit of PixelMath, scaling the images such that they have identical mean values (or medians) and variances (or mad). You could then apply this formula to a stack of images using the ImageContainer process.
Georg

[georg.viehoever]

The LinearFit process might also do what you need.
Georg