Re: Seeking Clarification of Procedure for Averaging Images
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Your hunch is correct.
- Just took a 5 layer stack in VARIANCE mode.
- Converted to LAB.
- Took the L channel from the variance mode stack and placed it’s mask on 510 over 511 blended in luminosity.
- The yellow from 511 came through with the mask much more than luminosity with no mask.
So, in this particular instance, looks like the bright values in the Variance stack L channel are the luminance of the yellow flowers.
On Jul 9, 2020, at 7:29 PM, Rick Gordon <lists@...
haven't experimented yet, but I have a hunch that masks made from the L,
and maybe even the a* and b* of a standard deviation stack rendering,
maybe auto toned or maybe not, might offer some intriguing
possibilities, maybe somewhat analogous to what can be done with auto
toned difference masks.
Even the a* and b* channels of a standard deviation stack rendering show
the contours of objects in ways that I bet, used as masks, could lead
to some interesting results.
I've got to check that out.
I expected a bit more from standard deviation.
EMERALD VALLEY GRAPHICS AND CONSULTING
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