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I am a Ph.D. candidate in the Department of Computer Science at Stanford University.
I am working with Vladlen Koltun and the Stanford Virtual Worlds Group.
My research interests are computer graphics, technologies for interaction in networked virtual worlds, and character animation.
I am particularly interested in how computer graphics can capture the richness and complexity of human motion and behavior.
Publications
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Sergey Levine, Christian Theobalt, Vladlen Koltun. Real-Time Prosody-Driven Synthesis of Body Language. To appear in ACM SIGGRAPH Asia 2009.
[PDF][Video]
This paper presents the body language synthesis system described in my undergraduate thesis. The method automatically synthesizes body language animations
directly from the participants' speech signals, without the
need for additional input. The body
language animations are synthesized by selecting segments from motion capture
data of real people in conversation in real time.
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Sergey Levine. Modeling Body Language from Speech in Natural Conversation. Master's research report, Stanford University Department of Computer Science, 2009.
[PDF][Video]
In this report, I describe a new approach for synthesizing body language from prosody using a set of intermediate motion parameters
that can be used to describe stylistic qualities of gesture independent of their form.
The quality of synthesized motion parameters is compared to the parameters of the original motions accompanying an utterance to obtain a
quantitative measure of the performance of the method.
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Sergey Levine. Body Language Animation Synthesis from Prosody. Undergraduate thesis, Stanford University Department of Computer Science, 2009.
[PDF][Video]
In my undergraduate thesis, I describe the body language synthesis system.
This system generates believable body language animations from live speech input, using only the prosody of the speaker's voice.
Since the method is suitable for live speech, it can be used in interactive applications, such as networked virtual worlds.
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Other Work
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Rendering the Eagle Nebula
[PDF][Video][Class Site]
My project for Pat Hanrahan's CS 348B rendering class,
completed in collaboration with Edward Luong, received the Grand Prize in the rendering competition. The image is of
the Eagle Nebula. The rendering used volumetric photon mapping and simulated the excitement of gases in the nebula by ultraviolet radiation, and the resulting emission of
lower-wavelength light.
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Airship Combat
[Details][Windows Executable][Class Site]
My project for Marc Levoy's introductory computer graphics course received the "most creative" award in the final project competition.
The project is a game that allows players to control sail-powered airships armed with cannons. The game simulates the physics of the sails using a simple explicit Euler scheme, and
uses hierarchical collision detection to detect hits.
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Nali Chronicles
[Installer][Mac Patch][Review]
Nali Chronicles is a mod for Unreal Tournament that I developed with a group of friends around 2001-2005.
All of the programming, most of the art assets, and some of the level design was done by me. The game is a little outdated by now, but if you have a copy of the original
Unreal Tournament, you can download the installer and give it a go.
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© 2009 Sergey Levine.
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