Space-Time Super-Resolution
Eli Shechtman, Yaron Caspi and Michal
Irani
- This
site displays results of the spatio-temporal super-resolution algorithm
presented in the paper “Space-Time Resolution in Video”
by E. Shechtman, Y. Caspi and M. Irani (PAMI 2005).
- The full
journal paper from PAMI, April 2005, can be found
here (3.3MB).
- A shorter conference version
from ECCV02 can be found here (900KB).
- Click
here to see the DEMOS
.
Abstract
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 time and in 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 interesting visual
tradeoffs in time and space, and to new video applications. These
include: (i) treatment of spatial artifacts (e.g., motion-blur)
by increasing the 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.
Keywords: super-resolution, space-time
analysis.