Quote:
Originally Posted by freebeard
OpenVDB
It's a physics engine used in animation
They're not measuring they're generating data.
It's computational. no green screen.
"air' can be described mathematically.
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here's some context:
* digital video interactive ( DVI ) undergirds today's viewer-controlled video.
* it was invented in 1988 by the David Sarnoff Research Center, Princeton, New Jersey, by Director, Arthur Kaiman and his team.
* it was the first time that motion images were created by a computer, using images originating from either CGI or a camera.
* digital processing and storage was the breakthrough.
* 'real looking' film was converted to 180,000 bytes/frame.
* then digitally compressed for storage on a laser-CD-ROM memory disc, by a compression algorithm, requiring a mainframe computer.
* decompression was handled by two, decompression algorithm, custom integrated circuits inside a personal computer, with joystick control, handling video and audio, memory block and logic block.
* computer software allowed the user to change colors, reposition objects, scan 360-degrees, or point to an object and get more information.
* The Radio Corporation of America ( RCA ) was involved.
* General Electric Corp.
* Microsoft.
* VLSI Technology Inc., San Jose, California.
* GE would donate Sarnoff Labs to SRI International.
* GE, retaining the rights to DVI ( DVI Technology Venture ).
* October 14, 1988, Intel Corp. acquired DVI Technology Venture.
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* the computer can reshuffle digitally coded bytes quickly manipulate what the viewer sees by simple commands.
* a panorama view can be created from any existing fish-eye photograph in memory.
* textures can be draped over any CGI object.
* flight simulators function this way.
* military training materials.
* business training materials.
* music videos.
* all images are generated from the CD-ROM.
* internally, a minicomputer is linked to a graphics workstation, and block-level architecture.
* as of 1989, a videodisc data rate was 4 Mb/s.
* Application software is outsourced to qualified vendors.
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* the 'dynamics' of physical phenomena appearing within the imagery, to the best of my knowledge, are simply 'artifacts' derived from scans of actual kinematics and dynamics which are stored in retrievable form within a lookup menu.
* the viewer experiences the 'look' of a dynamical systems which have been scanned and pre-recorded, not 'calculated' in the scientific sense of the word.
( George Lucas actually scanned film footage of real aerial dog fights in order to capture the dynamics later used in model, motion-capture-created dogfights appearing in Star Wars).
* While extremely sophisticated, even in 3D, the 'product' is very different from CFD, and I'm still unsure about the 'grid.'
* as of 1989, NASA's Numerical Aerodynamic Simulation Systems Division @ Ames Research Center reported that, 'the effect of turbulence, (is) something that no computer can yet simulate accurately.'
they went on to say that, to solve 'turbulence' would require a computer which was 1,000,000 times more powerful than the Cray Y-MP/832, which, according to Moore's Law, wouldn't be around until 2019.
One of my tasks today, is to see if I can find that Cray's capability in 1989.