TITLE: Interactive Camera Walks with Light Fields

PRESENTER: Sharat Chandran, http://www.cse.iitb.ac.in/~sharat, sharat@cse.iitb.ac.in

AFFILIATION:IIT Bombay, http://www.cse.iitb.ac.in/

DATE: Friday 19th May 2006

TIME: 12:00:00

PLACE: CSE Seminar Room, Level 1, K17

ABSTRACT:

Vision-based techniques have increasingly become common to provide
realism in computer graphics. Image-based modeling, relighting, and
rendering is a popular area that exemplifies this paradigm.

This talk has two components. First, I provide a few examples of the
use of image based techniques for computer graphics. Later, I discuss
camera walks using light fields where once authentic imagery has been
acquired using a camera gantry, or a handheld camera, detailed novel
views can be synthetically generated from various viewpoints.

Specifically, when a user ``walks'' through a virtual world, only a
subset of the previously stored light field is required. Appropriate
portions of the light field can then be cached at select ``nodal
points'' that depend on the camera walk. Once spartanly and quickly
cached, scenes can be rendered from any point on the walk efficiently.

BIOGRAPHY OF SPEAKER:

Sharat Chandran (http://www.cse.iitb.ac.in/~sharat) holds a
doctorate in Computer Science from the University of Maryland (1989)
and an undergraduate degree in Electrical and Electronics
Engineering from the Indian Institute of Technology, Bombay (1984).
He has held academic or engineering appointments at the
Indian Institute of Technology, Bombay; University of Maryland,
College Park (USA); Stanford University (USA), Oracle Corporation,
Redwood Shores (USA), NTT (Japan), and Schlumberger Corporation,
Austin (USA).

Sharat's research interests are in computer graphics and vision,
and in parallel computation. In these fields he has made noteworthy
contributions in the form of archival journal articles and peer
reviewed conference publications. About 30 students have graduated
at the Masters level or higher under his supervision; a similar number
of students have graduated with an undergraduate "honors" degree.

Host:

Arcot Sowmya

Seminar Convenor:

Van Hai Ho