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<p>and me, still excited about Ken Perlin's "Perlin Noise" work
applied to *visually convincing* cloud dynamics circa 2007.<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://ieeexplore.ieee.org/document/5694143">https://ieeexplore.ieee.org/document/5694143</a></p>
<p>I think this general topic/point is a good study on the
difference/utility of "visually compelling" models vs ones useful
for *prediction* or even *understanding*. I suppose
*explanatory* comes in one level of abstraction beyond those
two? In the case of clouds, "what kinds of physical processes
can we intuit from the specific structural features our visual
system is prone to identify?" <br>
</p>
<p>Pirk's work in this domain is very compelling, not just the
clouds/plumes but his general work in the domain of "semantic
segmentation of images". The residue from (or inertial
trajectory of) Mapillary's acquisition by FaceBook is something
I'm trying to follow. Does this blunt or diffract their work, or
re-energize it, or do the heavy-lifters from Mapillary go forward
into new ventures in this area? <br>
</p>
<p>This all has implications for human visual perception... I
haven't checked in recently on the work being done by Gar Kenyon's
group at LANL (formerly PetaVision) but it seems likely they are
converging. </p>
<p>- Steve<br>
</p>
<div class="moz-cite-prefix">On 10/8/20 11:09 PM, Stephen Guerin
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAOmOqnLuzUBmC_McJYT80SrMznEiNPmRDAw1EJukr0SEJvpRYQ@mail.gmail.com">
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<div dir="ltr">Nick, you should appreciate the video associated
with the paper in this link. We are considering something like
this to help interpolate fire plumes from our work with <a
href="http://alertwildfire.org" moz-do-not-send="true">alertwildfire.org</a>
cameras.<br>
<br>
<a
href="http://computationalsciences.org/publications/haedrich-2020-stormscapes.html"
moz-do-not-send="true">http://computationalsciences.org/publications/haedrich-2020-stormscapes.html</a><br>
<br clear="all">
<div>
<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">
<div dir="ltr">Stormscapes: Simulating Cloud Dynamics in
the Now<br>
Metadata<br>
T. Hädrich, M. Makowski, W. Pałubicki, D. T. Banuti, S.
Pirk, and D. L. Michels.<br>
Stormscapes: Simulating Cloud Dynamics in the Now.<br>
ACM Transactions on Graphics (SIGGRAPH Asia 2020), Vol.
39, No. 6, Article 175.<br>
<br>
Abstract<br>
<div dir="ltr">The complex interplay of a number of
physical and meteorological phenomena makes simulating
clouds a challenging and open research problem. We
explore a physically accurate model for simulating
clouds and the dynamics of their transitions. We
propose first-principle formulations for computing
buoyancy and air pressure that allow us to simulate
the variations of atmospheric density and varying
temperature gradients. Our simulation allows us to
model various cloud types, such as cumulus, stratus,
and stratoscumulus, and their realistic formations
caused by changes in the atmosphere. Moreover, we are
able to simulate large-scale cloud super cells –
clusters of cumulonimbus formations – that are
commonly present during thunderstorms. To enable the
efficient exploration of these stormscapes, we propose
a lightweight set of high-level parameters that allow
us to intuitively explore cloud formations and
dynamics. Our method allows us to simulate cloud
formations of up to about 20km×20km extents at
interactive rates. We explore the capabilities of
physically accurate and yet interactive cloud
simulations by showing numerous examples and by
coupling our model with atmosphere measurements of
real-time weather services to simulate cloud
formations in the now. Finally, we quantitatively
assess our model with cloud fraction profiles, a
common measure for comparing cloud types.</div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">_______________________________________________________________________<br>
<a href="mailto:stephen.guerin@simtable.com"
target="_blank" moz-do-not-send="true">Stephen.Guerin@Simtable.com</a>
<div>CEO, Simtable <a href="http://www.simtable.com/"
target="_blank" moz-do-not-send="true">http://www.simtable.com</a><br>
<div>1600 Lena St #D1, Santa Fe, NM 87505
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<div>office: (505)995-0206 <span
style="font-size:12.8px">mobile:
(505)577-5828</span></div>
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@simtable</span></div>
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href="http://zoom.com/j/5055775828"
target="_blank" moz-do-not-send="true">z</a><a
href="http://oom.simtable.com"
target="_blank" moz-do-not-send="true">oom.simtable.com<br>
</a></span></div>
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