Augmented Reality Sandbox with Real-Time Water Flow Simulation

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Video of a sandbox equipped with a Kinect 3D camera and a projector to project a real-time colored topographic map with contour lines onto the sand surface. The sandbox lets virtual water flow over the surface using a GPU-based simulation of the Saint-Venant set of shallow water equations.
We (the UC Davis W.M. Keck Center for Active Visualization in the Earth Sciences, www.keckcaves.org) built this for an NSF-funded project on informal science education. These AR sandboxes will be set up as hands-on exhibits in science museums, such as the UC Davis Tahoe Environmental Research Center (TERC) or Lawrence Hall of Science.
Project home page: idav.ucdavis.ed...
The sandbox is based on the original idea shown in this video: • Interactive Kinect san...
The water flow simulation is based on the work of Kurganov and Petrova, "a second-order well-balanced positivity preserving central-upwind scheme for the Saint-Venant system."

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19 авг 2024

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Комментарии : 1,2 тыс.

@tonyoik1012 10 лет назад

I have no idea what im watching,but i like it.

@TheMrReynawa 8 лет назад

Imagine playing Simcity or The Sims 4 in this. We'll be gods.

@massimookissed1023 7 лет назад

Oh yeah, that'd be just great for your city when your high-land-value dense commercial district gets dug up by a giant catzilla needing a dump! How you gonna deal with *that*, Mr Mayor?

@tastofink 5 лет назад

Age of empires XD

@cr0w342 2 года назад

This is 10 years old. Incredible. I wonder what it looks like now or has it been improved upon?

@omphya6229 8 месяцев назад

The only difference Ive seen since was some version with "creatures" (really just images moving around on the sand) 5 years ago.

@ProZackBoy 12 лет назад

Throughout the whole thing my heart kept pounding because I was afraid he'd overfill it with water and it would seep out.. I guess this is what it's like to feel outdated.

@seasons0123 9 лет назад

Love this!! Kids would love it, great sensory activity! And learning about Topographic Maps maps sweet!! Soothing.. so many neat uses... especially for the Sensory kid.

@danieldaniel987 9 лет назад

Lol sandbox mode

@okreylos 12 лет назад

Yes, the one-second delay you can see in the videos is caused by the foreground detection filter. The idea is to keep a fixed-length history for each pixel (1s by default), and only update a pixel's output value if its history buffer has a variance smaller than a given threshold. On the upside, it works really well; on the downside, it causes a (short) delay.

@NeoN-PeoN 12 лет назад

This can certainly be used for more than just that. The amount of rapid prototyping from something like this could help a lot of designers. I really want to use this thing.

@ratgreen 10 лет назад

Could you port this into a minecraft map editor ? That would be epic

@Fibr3Optix 10 лет назад

That's how god did it. Checkmate ATHEISTS!

@Warhamer116 9 лет назад

So we are gods now?

@AlphaGarg 9 лет назад

...I guess so

@SergeantAcoustic 6 лет назад

@@markoftheland3115 water ai

@nlicky 12 лет назад

Pretty awesome water simulation by using actual sand to scan a heightmap. Looks very realistic and scanning the height of the sand is very cool. Just the scanning part is awesome enough, the water simulation being applied to the heightmap is icing on the cake.

@sparklyjazzpants 12 лет назад

I'm a preschool teacher, and I'm fairly certain you have invented the sandbox of the future. Years from now, all of my kids will expect augmented reality in the classroom!

@kirill2525 10 лет назад

WANT

@suijinmo6981 12 лет назад

magical simulation! Enhancing current demostrative methods. i think it can do things more than demostration.

@AnchalagonTheBlack 12 лет назад

This may just be the coolest thing I've ever seen.

@SligStorm 12 лет назад

You inspire me that programming with kinect can be interesting and even artistic!

@okreylos 12 лет назад

That's where the 1-second delay comes from. Anything that doesn't move for 1 second is assumed to be sand, and added to the topography model. It works very well, unless a user holds their hand or arm very still. You can see that a few times in the video. The 1-second delay is not really annoying because when you work with the sand, you see it changing immediately. It's just the virtual topography that's updated a second later.

@johnbozi 12 лет назад

little kids playing in the sandbox see this way anyway, it's us adults that need the high tech stuff to get enthused about sand castles again. Great work, Next time I take a trip I'm coming over to your back yard.

@BestofYTChannel 12 лет назад

This video has been selected by the channel as one of the Most Amazing videos on RU-vid and was added to the channel's playlist accordingly. Thanks for sharing. Regards, bestofYTchannel

@rne1223 12 лет назад

Awesome...this is what software suppose to do, bring cheap solutions to hard problems. Great job sir.

@ChocoboClaudia 12 лет назад

Pretty crazy things that people are making with Kinect. Pretty cool.

@devonparfait1 12 лет назад

This brings a whole new meaning to the term sandbox game

@TaraDobbs 12 лет назад

Classic Battletech table top board game. Serious loads of fun with light, medium and heavy mechs running around shooting each other over this. Damn, my husband and I would have so much fun.

12 лет назад

It's fun how if you leave your hand still for a moment, the topographic map includes it too.

@OttoSkadelig 12 лет назад

This is a fantastic application of augmented reality!

@okreylos 12 лет назад

It's a Linux box with a Core i7 CPU and a Geforce 580. Most of the computation is done on the Geforce. The water simulation is very computationally intensive, and pushes the 580 to its limits. You can see it chugging a bit at several points in the video.

@NickyC93 12 лет назад

Really is a great invention. The learning benefits are endless. Thank you for bringing this to be.

@okreylos 11 лет назад

The 1 second delay is to reduce jitter and, more importantly, filter out hands and tools so they don't interfere with the terrain. If it bugs you so much, you can turn if off by passing "-nas 1" to the AR sandbox executable. The delay would then be between 20 and 25 milliseconds. You're welcome.

@MrBobcat975 12 лет назад

Sand is real, water and topographical colors are not. Kinect has the ability to see 3D shapes which is what this person is making in the sand. Very cool stuff.

@Andernerd 12 лет назад

Good luck floating your boat with virtual water. In all seriousness though, this a really cool. Nice work!

@KatzInABowl 12 лет назад

The point of tech demos is to demonstrate certain functions of a creation. Some may help further research into a particular subject. Creation is a base of research. So ya, there's a point to this.

@okreylos 12 лет назад

It's a grid-based explicit simulation, details are in the Kurganov&Petrova paper I cite in the description. It's the same method used by civil and hydrological engineers and scientists to simulate water flow in real environments. It's not double-precision (as in floating point) because it turns out the method is stable under numerical round-off, but it's second-order accurate in the numerical sense.

@Jourei_ 12 лет назад

I always loved sandboxes, and now I can play with actual sand boxes again! \o/

@AGentertainmentofficial 12 лет назад

I like how consumers are making better use of the Kinect than Microsoft ever did.

@32BitJunkie 12 лет назад

That was an astoundingly good call. Thank you.

@IRMentat 9 лет назад

AR is so much more interesting than VR. More useful applications as well.

@20-NYC 12 лет назад

Wow that looks so real.

@RhodianColossus 12 лет назад

This needs to be sold.

@vanmaren962 12 лет назад

You know when technology is getting crazy when you are no longer surprised by something like this lol

@Apropoetic 12 лет назад

This is really pretty cool. I can only imagine the other possible uses of something like this.

@oOKakarotOo 12 лет назад

Holy crap I had no idea that it was a projector on top! Still very cool

@okreylos 12 лет назад

Fair enough. As far as the simulation goes, it's pretty much top of the pops, as it's a second-order accurate time discretization of the mathematical equations governing shallow water flow. If there's anything better out there, someone needs to tell me. The *rendering* of the resulting water surface, however, is a different story. It's non-photorealistic. I chose this model because it highlights the motion of the water at the scale viewers see the box.

@Capon3d 12 лет назад

I usually hate sandbox games, but this looks pretty good

@okreylos 12 лет назад

I am research faculty at the University of California, Davis. My job is developing scientific visualization software for virtual reality environments, particularly for the Earth sciences. This is a side project.

@SoraSoro 12 лет назад

not gonna lie, this is pretty cool bro.

@okreylos 12 лет назад

The "rain maker" is based on depth as well. It detects non-moving objects inside a configured elevation range. I'm still working on improving that so it's harder to make it rain accidentally. Color-based detection does generally not work because everyting takes on color from the projection.

@murataruta 12 лет назад

couldn't have finished the video without your comment :)

@1ChilledDude 11 лет назад

Sorry, for the late reply, but okay got it. Thanks, Oliver. Still find this super impressive even now.

@vaniog29 11 лет назад

I can watch this for days....

@MegaDnorth 10 лет назад

Absolutely, the most significant use of a "gaming" tool!!! :)

@Windkisssed 9 лет назад

Best video I've seen of this.

@GamesSpartan 12 лет назад

You, sir, are VERY fucking clever ;D It's amazing how well you've manipulated the Kinect System and somehow programmed it to work the way it did. Pure Genious!

@DBox137 12 лет назад

Your Video is a GREAT Inspiration to help ADULTS to REMEMBER TO PLAY. They say Creativity is found in Play.... The POWER in PLAY is deeply Misunderstood. If People KNEW what PLAYING will DO they would ALL be doing MORE of it.

@HeTianHeng 11 лет назад

bloody brilliant....I mean really... I am deeply impressed

@themasterchann 12 лет назад

From Dust the game + this = awesomeness

@Stormthorn67 12 лет назад

Your water looks like some sort of metallic blue paint. But this tech is very impressive.

@LadySoralyn 12 лет назад

that made the video allot more interesting

@okreylos 11 лет назад

I'm not sure if I understand the question correctly. The Kinect only scans inside the bounds of the sandbox, but any non-sand objects you place on the sand will be picked up, and affect the water flow. During testing I used Lego bricks to build structures or levees, for example.

@okreylos 12 лет назад

It was a lot of work! The hardest part was that I was trying to make it seem as if there were lag -- you know, to make it more like what people expect of Kinect -- and therefore had to anticipate when the projection was going to change one second before it actually did. Took a LOT of trial and error to get that right. In retrospect, it would have been easier to just built the damn thing for real instead of faking it.

@NellieKAdaba 12 лет назад

I used to like sanboxes as a child in Belgium, now I don't care, and I hated when sand got into my eyes or mouth. But this sandbox here is beautiful.

@rws531 12 лет назад

Easily best song on RU-vid

@SupaBlank 10 лет назад

This is amazing, you should market this. "The ultimate Techie Zen Garden". Put me down for two.

@Thegeeksquadofone 12 лет назад

Looks like a great new tool for construction

@skeptical_thinkers 12 лет назад

This video would look amazing in 3D

@PiokoMew 12 лет назад

I need one of these! it would be totally awesome if it also simulated vegetation growth based off of where water sources were

@anecann 12 лет назад

New way to analyze and prevent natural disasters.

@shawnio 11 месяцев назад

this would be a great way to build a custom map

@okreylos 12 лет назад

Maybe. I personally like the "cartoon water" look, because it highlights small-scale water movement in a way realistic rendering wouldn't. But I appreciate that it's a matter of taste.

@TheYoungGuy15 12 лет назад

the future is going to be awesome.

@guruflorida 12 лет назад

Awesome, wow! I cant wait for the software package release. I want to build one for my daughter, she'd love it. I have all the pieces including a nice DLP projector and lots of 8020. :)

@t-rkplayzgames6737 5 лет назад

My early college school has this over at the college I play with it a lot Very neat

@Somezable 12 лет назад

that water looks a bit glichy, but thats one hell of a sandbox

@daydreamdancer13 12 лет назад

just so you know, when he said pet peeve he wasn't calling you a pet peeve, he was saying that that is a pet peeve of his. It's not an insult in any way. :)

@LiamSilverman 5 лет назад

This is really really facinating. Reminds me a lot of the holograms in star wars.. I wonder if you could connect VR to it and have a top down 3d aspect to it without the sand.

@okreylos 5 лет назад

AR/VR Sandbox: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-NXD7Dfo7Ngo.html

@Bladi4n 12 лет назад

Fucking amazing. You should continue working this out to some kind of game where you have to control the land for a species living there.

@okreylos 12 лет назад

The idea was that you can make water flow out by diggind a trench to the edge of the box. After all, we're trying to simulate landscapes, not sand boxes. :) Without the height indicators, it looks a bit boring. Everything can be disabled independently via command line switches, if one wanted to do that.

@demize2010 11 лет назад

This just blew my mind. Wow.

@JoeRodge 12 лет назад

I can't wait to play Command & Conquer / Starcraft on one of those. ROAR!

@okreylos 12 лет назад

How-tos and software will start materializing on my web page in the near future. After all, this is just a prototype, and it is intended to be cloned by science museums. Hardware cost (gaming PC, projector, Kinect, sandbox material) totals between $2000 and $2500.

@ReligiousFiction 12 лет назад

Best. Sandbox. EVER.

@wawamelonpop 12 лет назад

i dont know whats going on but that is SO COOL!

@Valkyrie11234 12 лет назад

I love how people are like " why arent we in the future yet?" take a look around you. We already are.

@AngrySackBoy 12 лет назад

I wonder if this technology could ever help us to understand the transformation that mars went under millions of years ago. From having water to having no water. Interesting use of the technology.

@RcTranMD 12 лет назад

The sand box just got real I wish I had this when I was in preschool

@DaimlerStool 12 лет назад

i could watch this forever, gives me a fuzzy feeling inside... x_x

@MrEduardKhil 12 лет назад

Could be great for education, so much potential.

@okreylos 12 лет назад

What everybody else said. The virtual sandbox is not a simulation of a real sandbox, but of a real landscape. To be precise, the water simulation runs at a 1:100 scale.

@okreylos 12 лет назад

Hardware cost is about $2200, less if you already have a gaming PC or a projector or a Kinect. The software will be available as soon as I get it packaged.

@zuhlmuseum 9 лет назад

would love to create one of these for the Zuhl Museum! so cool!

@BrenainnJordan 10 лет назад

Absolutely LOVE this idea! Looks great fun :P

@foxter888ESP 11 лет назад

it would be sick for a strategy game, like where you make your map before playing then maybe using cards with markers to play against other players and of the such

@MasonMoment 12 лет назад

Its going to be hilarious when the cat pisses in it. Thats super awesome though.

@ethanjoseph2579 12 лет назад

this. is. AWESOME.

@BlindMonk93 12 лет назад

This would work really well for playing "From Dust"

@spo0ons 12 лет назад

If only video games had sandboxes like these...

@stephengroves6229 8 лет назад

Games like Project Spark would be changed forever if this system could be used to change the land-surface in-game. It would also allow a computer to visualize and render environments in a more true-to-life manner instead of digits and geometric shapes.