Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by joshsegall on Monday June 27, 2011 @11:50PM
(#2703998)
I was surprised how much some of those shots resemble the effects you see in video games physics simulations and online "toy" physics sandboxes. I figured the real world would be more noisy but these results are quite uniform and beautiful. I'll have to give our physics modeling more credit from now on!
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by arcs on Tuesday June 28, 2011 @04:17AM
(#2704558)
Real time physics simulations of deformable objects these days tend to be based on fairly accurate physics models. The major issue facing such simulations today is that it's difficult to simulate extremely rigid objects at high frame rates, due to the non-linear aspects of the underlying forces. The challenge is to take shortcuts and find optimizations that gets you decent looking results while not being overly slow or unstable.
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by jurjenh on Monday June 27, 2011 @11:29PM
(#2703944)
Based on the last shot, could potentially be useful for diagnosing potential failures due to metal fatigue - the kind of vibrations that you may be able to hear, but can't see. Not sure if that's the intent, but that's what jumped out at me...
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by sorbus on Tuesday June 28, 2011 @12:19AM
(#2704059)
That's the intent; the video was shot by a vibration tester manufacturer (an awkward phrase). If you go to the URL at the end, it says that it's a promotion for a predictive maintenance tool that uses vibrations.
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by rauljara on Monday June 27, 2011 @11:29PM
(#2703943)
I love ultra high speed video. Just about any motion is more interesting at that speed, even simple walking. But my favorite is watching water balloons explode: http://www.youtube.com/watch?v=0sLxuSN2UnQ
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by yason on Tuesday June 28, 2011 @03:20AM
(#2704405)
Curiously, most of the vibrations shown are such that you can hear in a very concrete terms.
In banging a barrel or a cymbal you can certainly hear the fluctuations on the metal surface. But you don't get a proper visual of how the sound actually forms until you see it on the video; when you do, it will just fit.
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by chrisjsmith on Tuesday June 28, 2011 @04:35AM
(#2704595)
Slightly OT (or is it), but it's an ad for Fluke - probably the best test gear you can get IMHO yet under-advertised. It's good to see a good company getting with the times.
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by JonnieCache on Tuesday June 28, 2011 @06:22AM
(#2704816)
It's a beautiful ad as well. The music is perfect, the editing is perfect in relation to the music, the climactic moment with the cymbal was perfectly timed in relation to the video as a whole, bravo.
They definitely hired the right people.
EDIT: would've been nice if the video itself had been submitted rather than this noxious blogspam.
Re:Vibrations Invisible to the Human Eye Shot at 1,000 Frame...
by chrisjsmith on Tuesday June 28, 2011 @05:35AM
(#2704737)
This is true at the moment but outfits such as Agilent and BK have been making inroads with cheaper, feature-packed kit and agressive marketing. I'd rather have a Fluke TBH. A Fluke won't kill you.
Here's a good paper on some of the technical details of a fairly sophisticated system used in a video game, if you are interested: http://graphics.berkeley.edu/papers/Parker-RTD-2009-08/index...
http://dsc.discovery.com/tv/time-warp/episode/episode.html
E.g.: http://www.youtube.com/watch?v=X0-TbUUXDtM
In banging a barrel or a cymbal you can certainly hear the fluctuations on the metal surface. But you don't get a proper visual of how the sound actually forms until you see it on the video; when you do, it will just fit.
They definitely hired the right people.
EDIT: would've been nice if the video itself had been submitted rather than this noxious blogspam.