Author Topic: Linear vs. non-linear  (Read 2485 times)

Offline johnw3d

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Linear vs. non-linear
« on: 2013 May 11 09:44:06 »
Hi all.  I'm wondering if there are good reasons to perform certain operations in linear space prior to a stretch versus after.   

Apart from the obvious pre-processing steps, there are some operations that would seem to be definitely linear stage, such as deconvolution and some only post-stretch such as HDR wavelets.  There are some that appear to be almost-universally done with a linear image, such as background modeling and color calibration, but it looks like most post-processing operations *could* be performed in either space, which seems to be the case on scanning the many examples of "my PixInsight workflow" postings on the web at large.

All insights appreciated.

Thanks,
John.
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