[FRIAM] signal and noise

[Stephen Guerin]

In Pradeep Sen's Dual Photography example, the signal of the "dual image"
of the playing card that is obstructed in the "primal image" is literally
taken from the noise in the primal image (the diffusive reflections).

dual image of obstructed face card on left. primal diffuse image on the
right.
[image: image.png]

watch video <https://youtu.be/p5_tpq5ejFQ?t=261> at this timecode. Rewind
to beginning to see explanation of Dual Photography.

By taking the transpose of the structured light scan, the dual image is
recovered from the noise signal. See paper
<https://graphics.stanford.edu/papers/dual_photography/>.

Can we use Dual Photography as a metaphor where the noise and odor of
waste of organisms becomes perceivable signal to food for dual organisms in
the extended food web?

-Stephen


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Stephen.Guerin at Simtable.com <stephen.guerin at simtable.com>
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On Fri, Sep 9, 2022 at 11:27 AM Steve Smith <sasmyth at swcp.com> wrote:

>
> Marcus Daniels wrote:
> > “Noise” may have some quantitative properties but nothing that reveals
> ultimate causality without at least factoring all unseen events from the
> Big Bang onward.  Signal to noise is about being able to discriminate
> something you want from something you don’t.   Further, if you wanted to
> predict the noise part, it just wouldn’t be possible.  There are many
> different signals to consider that have differing relevance to different
> observers, and they to can be easier or harder to objectively discriminate
> from noise too.
>
> My deep, intuitive belief about "the nature of reality" is that *noise*
> is a contrivance of the sentient/conscious (nominally human mind).   A
> trite way of saying this is "everything has meaning" which is no
> more/less trite than "everything is connected", etc., ad nauseum.
>
> I think what you are saying here is that "noise" (and "meaning"?) are
> entirely contingent on a reductionist decomposition of (sub)systems...
> declaring (implicitely) what is interesting and then tautologically
> declaring anything that isn't *that* is *uninteresting* (noise?).
>
> Indra's Net (or Dave's more familiar description "all contextualizes
> all")...
>
>
> >
> >> On Sep 8, 2022, at 4:14 PM, Prof David West <profwest at fastmail.fm>
> wrote:
> >>
> >> It seems, to me, that several conversations here—AI, hallucinogens,
> consciousness, participant observation, and epistemology—have a common
> aspect: a body of "data" and disagreement over which subset should be
> attended to (Signal) and that which is irrelevant (Noise).
> >>
> >> Arguments for sorting/categorization would include: lack of a Peircian
> convergence/consensus; inability to propose proper experiments; anecdotal
> versus systematic collection; an absolute conviction that everything is
> algorithmic and, even if the algorithm has yet to be discerned, it,
> ultimately, must be; etc..
> >>
> >> I often feel as if my positions on these various topics reduces, in
> some sense, to a conviction that there is overlooked Signal in everyone
> else's Noise; even to the point of believing the Noise IS the Signal.
> >>
> >> Is this in any way a "fair' or "reasonable" analysis?
> >>
> >> davew
> >>
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