[HN Gopher] Fish in remote tank made into fractals with Video Fe...
___________________________________________________________________
Fish in remote tank made into fractals with Video Feedback Device
[video]
Author : thelightherder
Score : 91 points
Date : 2024-07-28 00:33 UTC (22 hours ago)
(HTM) web link (www.youtube.com)
(TXT) w3m dump (www.youtube.com)
| gus_massa wrote:
| @OP: I remember you get an interview where you explained your
| machine, but I can't find it. I found https://vimeo.com/871751234
| that shows ore about the device, but does not explain too much.
| Do you have a recommendation?
| thelightherder wrote:
| Hi - lots of information on the site here:
| https://www.thelightherder.com.
|
| A recent video where I explain a lot about the building of it
| here: https://youtu.be/cvdN7_BIaDk?si=z3_oxZNYPUaZqnjE
|
| A video that explains one of the important concepts is here:
| https://vimeo.com/508776650
|
| That interview is here:
| https://youtu.be/moTN63m8Rh8?si=EiciQDOTOY4G7XaS
|
| A chronology of the project is here:
|
| Reverse:
| https://www.tumblr.com/walkswithdave/tagged/videofeedbackkin...
|
| Forward:
| https://walkswithdave.tumblr.com/tagged/videofeedbackkinetic...
|
| (I don't know if you can see all the posts on there if you
| don't have a tumblr account. I know...who has a tumblr
| account?)
|
| Thanks for your interest!
|
| D
| dylan604 wrote:
| memories of when this and oil in water on an overhead projector
| were the pinnacle of trippy visuals. or the interactive exhibits
| that would do the feed back live of whoever was standing in front
| of the exhibit.
| pigscantfly wrote:
| The guy who invented psychedelic light painting is still living
| in SF and giving occasional shows -- have known him for a few
| years as a neighbor, ran with a pretty interesting crowd in the
| 60's and 70's.
|
| [1] https://billhamlights.com/history/
| mrbluecoat wrote:
| Reminds me of a similar video entitled "Man in remote recliner
| made into fractals with Recreational Mushroom Device"
| dmje wrote:
| I love, love, love this. Such a cool project. Your explanatory
| video [0] is just brilliant. Amazing dedication, vision, and I
| suspect a whole heap of psychedelics too :-)
|
| [0] https://youtu.be/cvdN7_BIaDk
| thelightherder wrote:
| Thanks! (but, alas no psychedelics)
| Modified3019 wrote:
| Fish were an excellent choice. They are very versatile:
| https://m.youtube.com/watch?v=USKD3vPD6ZA ("I Gave My Goldfish
| $50,000 to Trade Stocks")
| jddj wrote:
| Very cool. Gave me strong nostalgic feelings for Electric Sheep
| and the video feedback adds something great.
| surfingdino wrote:
| Is it fishism, yet? /q
| DonHopkins wrote:
| Pure genius! This is the coolest fish augmentation since wheels!
|
| Fish on Wheels:
|
| https://www.youtube.com/watch?v=YbNmL6hSNKw
|
| Jim Crutchfield has a great video that explains the dynamics of
| video feedback, with really trippy music, and a paper that goes
| along with it, which he made with his analog video processing
| computer that he built at the University of California, Santa
| Cruz for his Ph.D. in physics in 1984.
|
| https://en.wikipedia.org/wiki/James_P._Crutchfield
|
| https://csc.ucdavis.edu/~chaos/
|
| https://csc.ucdavis.edu/~chaos/chaos/films.htm
|
| Space-Time Dynamics in Video Feedback
|
| https://www.youtube.com/watch?v=B4Kn3djJMCE
|
| A film by Jim Crutchfield, Entropy Productions, Santa Cruz
| (1984). Original U-matic video transferred to digital video. 16
| minutes.
|
| James P. Crutchfield. Center for Nonlinear Studies, Los Alamos
| National Laboratories, Los Alamos, NM 87545, USA.
|
| ABSTRACT: Video feedback provides a readily available
| experimental system to study complex spatial and temporal
| dynamics. This article outlines the use and modeling of video
| feedback systems. It includes a discussion of video physics and
| proposed two models for video feedback based on a discrete-time
| iterated functional equation and on a reaction-diffusion partial
| differential equation. Color photographs illustrate results from
| actual video experiments. Digital computer simulations of the
| models reproduce the basic spatio-temporal dynamics found in the
| experiments.
|
| 1. In the beginning there was feedback ...
|
| James P. Crutchfield. "Space-Time Dynamics in Video Feedback."
| Physica 10D 1984: 229-245.
|
| Here's a paper he wrote that describes the effects in that video:
|
| [pdf]
| https://csc.ucdavis.edu/~cmg/papers/Crutchfield.PhysicaD1984...
|
| [Plates 1-4]
| https://csc.ucdavis.edu/~cmg/papers/Crutchfield.PhysicaD1984...
|
| [Plates 5-7]
| https://csc.ucdavis.edu/~cmg/papers/Crutchfield.PhysicaD1984...
|
| "Space-Time Dynamics in Video Feedback. James P. Crutchfield.
| Center for Nonlinear Studies, Los Alamos National Laboratories,
| Los Alamos, New Mexico 87545, USA."
|
| "Video feedback provides a readily available experimental system
| to study complex spatial and temporal dynamics. This article
| outlines the use and modeling of video feedback systems. It
| includes a discussion of video physics and proposes two models
| for video feedback dynamics based on a discrete-time iterated
| functional equation and on a reaction-diffusion partial
| differential equation. Color photographs illustrate results from
| actual video experiments. Digital computer simulations of the
| models reproduce the basic spatio-temporal dynamics found in the
| experiments."
|
| Some interesting excerpts:
|
| "In the beginning, I argued that a video feedback system is a
| space-time simulator. But a simulator of what exactly? This
| section attempts to answer this question as concretely as
| possible at this time. A very useful tool in this is the
| mathematical theory of dynamical systems. It provides a
| consistent language for describing complex temporal behavior.
| Video feedback dynamics, though, is interesting not only for the
| time-dependent behavior but also for its complex spatial
| patterns. In the following section I will come back to the
| question of whether current dynamical systems theory is adequate
| for the rich spatio-temporal behavior found in video feedback.
| This section introduces the qualitative language of dynamical
| systems [5], and then develops a set of discrete-time models for
| video feedback based on the physics of video systems. At the
| section's end I propose a continuum model akin to the reaction-
| diffusion equations used to model chemical dynamics and
| biological morphogenesis."
|
| He also talks about "dislocations", which is similar to the
| effect of the error diffusion dithering that I love:
|
| "A good example of quasi-attractors is the class of images
| displaying dislocations. This terminology is borrowed from fluid
| dynamics, where dislocations refer to the broken structure of
| convective rolls in an otherwise simple array. Dislocations are
| regions of broken symmetry where the flow field has a
| singularity. The formation of this singularity typically requires
| a small, but significant, energy expenditure*. In video feedback,
| dislocations appear as inter-digitated light and dark stripes.
| The overall pattern can be composed of regular parallel arrays of
| alternating light and dark stripes with no dislocations, and
| convoluted, maze-like regions where stripes break up into shorter
| segments with many dislocations. The boundaries between segment
| ends form the dislocations. They can move regularly or wander
| erratically. Dislocations form in pairs when a stripe breaks in
| two. They also annihilate by coalescing two stripes. Dislocations
| make for very complex, detailed patterns whose temporal evolution
| is difficult to describe in terms of dynamical systems because of
| their irregular creation and annihilation. Nonetheless, when
| perturbed very similar images reappear. A quasi-attractor would
| be associated with global features, such as the relative areas of
| regular stripe arrays and dislocation regions, the time-averaged
| number of dislocations, or the pattern's gross symmetry."
|
| In 2022, Crutchfield and his graduate student Kyle Ray described
| a way to bring the heat production of conventional circuits below
| the theoretical limit of Landauer's principle by encoding
| information not as pulses of charge but in the momentum of moving
| particles.
|
| https://www.scientificamerican.com/article/lsquo-momentum-co...
|
| While a graduate student, Crutchfield and students from the
| University of California, Santa Cruz (including Doyne Farmer)
| built a series of computers that were capable of calculating the
| motion of a moving roulette ball, predicting which numbers could
| be excluded from the outcome:
|
| The Eudaemonic Pie / Newton's Casino: The Bizarre True Story of
| How a Band of Physicists and Computer Wizards Took on Las Vegas
|
| https://archive.org/details/eudaemonicpie00bass_0/mode/2up
|
| More about video feedback and vidicon tubes:
|
| https://news.ycombinator.com/item?id=16753648
|
| The best link in that posting is broken but here's a good one
| that shows what I love so much about the blooming effects from
| those old vidicon tube video cameras:
|
| Donny & Marie Osmond - Disco Finale W/ Welcome Back Kotter Cast,
| Karen Valentine, Hal Linden...
|
| https://www.youtube.com/watch?v=aFVeIPardK8
|
| Here's some weird video feedback stuff I did on a PowerPC Mac
| back around 2001 or so:
|
| WarpOMatic Explanation
|
| https://www.youtube.com/watch?v=ikFF1frSFRg
|
| WarpOMatic Demo 1
|
| https://www.youtube.com/watch?v=qME6aniaPRg
|
| WarpOMatic Demo 2
|
| https://www.youtube.com/watch?v=DJoPn1h_ibk
| cocobutter3 wrote:
| This spawned an unrelated thought. Would using this source of
| input (a fish tank) be a good source of entropy? Would seen to me
| tracking fish movements would be quite random.
| amelius wrote:
| Reminds me of:
|
| https://en.wikipedia.org/wiki/Lavarand
| thelightherder wrote:
| Funny - after watching this video a friend had this same
| thought about the lava lamps and random numbers, then I had
| the same thought about using a fish tank to generate random
| numbers.
| mystified5016 wrote:
| I dunno, I would suspect that fish would exhibit patterns when
| averaged over a long enough period. They probably patrol the
| perimeter regularly, check the same spots for food every few
| hours, some are territorial and will patrol their spot. They're
| probably not all that random. Living things tend not to be.
___________________________________________________________________
(page generated 2024-07-28 23:07 UTC)