The  Weizmann  Institute  of  Science
Faculty of Mathematics and Computer Science

Vision and Robotics Seminar

Eli Shechtman

will speak on

Increasing Space-Time Resolution in Video

We propose a method for constructing a video sequence of high space-time resolution by combining information from multiple low-resolution video sequences of the same dynamic scene. Super-resolution is performed simultaneously in {\em time} and in {\em space}.  By ``temporal super-resolution" we mean recovering rapid dynamic events that occur faster than regular frame-rate.  Such dynamic events are not visible (or else observed
incorrectly) in any of the input sequences, even if these are played in ``slow-motion".

The spatial and temporal dimensions are very different in nature, yet are inter-related.  This leads to visual tradeoffs in time and space, and to new video applications.  These include: (i) treatment of {\em spatial} artifacts
(e.g., motion-blur) by increasing the {\em temporal} resolution, and (ii) combination of input sequences of different space-time resolutions (e.g., NTSC, PAL, and even high quality still images) to generate a high quality video sequence.

This is joint work with Yaron Caspi and Michal Irani.

The lecture will take place in the
Lecture Hall, Room 1, Ziskind Building
on Thursday, May 9, 2002
at noon