Quote:
Originally Posted by LightningNZ
The median is said to be "robust" to outliers - that's why people use it.
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Cam: using a median combine instead of mean will give you a degree of implicit outlier rejection but it comes at a cost of approximately 20% less improvement in SNR (for larger sets of image - results are worse for small sets.) You'll almost certainly get a better overall result using an average combine with an explicit rejection algorithm.
Ray: I haven't had a chance to think about your model much but at a superficial level I was wondering whether dithering reduces FPN. Have you already considered this?
I only recently got back from a month away. When I catch up I will do some experiments with my large collection of narrowband flats and see if my empirical results fit your curve.
Cheers,
Rick.