Jen-Yuan Chiang

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We present a novel technique for acquiring detailed facial geometry of a dynamic performance using extended spherical gradient illumination. Key to our method is a new algorithm for <i>jointly</i> aligning two photographs, under a gradient illumination condition and its complement, to a full-on tracking frame, providing dense temporal correspondences under(More)
We present a novel method for acquisition, modeling, compression, and synthesis of realistic facial deformations using polynomial displacement maps. Our method consists of an analysis phase where the relationship between motion capture markers and detailed facial geometry is inferred, and a synthesis phase where novel detailed animated facial geometry is(More)
For more than three decades, computer graphics researchers have been working to create a photorealistic digital actor. In the Digital Emily project, Image Metrics and the University of Southern California's Institute for Creative Technologies (USC ICT) animated a digital face using new results in 3D facial capture, character modeling, animation, and(More)
The Virtual Museum Guides [1] are two virtual humans set in an exhibit at the Museum of Science, Boston, designed to promote interest in Science, Technology, Engineering and Mathematics (STEM). The primary audience is children between ages 7 to 14, in particular females and other groups under-represented in STEM. The Guides are based on and extend the(More)
In this article we describe the software-controllable spectral capabilities available in OFDM based UWB signals. Here we intend to show how MB-OFDM signal might adapt local regulations, remedy future interference situations prepare UWB for the opportunities of cognitive radio. Spectrum sculpting for interference control is more easier and more effective(More)
Figure 1: Top, images taken under spherical gradient illumination. Middle, A subset of the structured light pattern images of three different frequencies plus a full white pattern. The other three stripe patterns have the same frequencies but with a 90 degree phase shift. Bottom, Results for each scan: albedo texture, world-space normal map, displacement(More)
Capturing facial geometry that is high-resolution, yet easy to animate, remains a difficult challenge. While a single scanned geometry may be straightforward to animate smoothly, it may not always yield realistic fine scale detail when deformed into different facial expressions. Combining scans of multiple facial expressions, however, is only practical if(More)