TITLE:

Video Stabilization of Atmospheric Turbulence Distortion

DATE:

Friday, April 12th, 2013

TIME:

3:30 PM

LOCATION:

GMCS 214

SPEAKER:

Yifei Lou.
Department of Mathematics.
University of California, Irvine.

ABSTRACT:

We present a method to enhance the quality of a video
sequence captured through a turbulent atmospheric medium, and give an
estimate of the radiance of the distant scene, represented as a
“latent image,” which is assumed to be static throughout the video.
Due to atmospheric turbulence, temporal averaging produces a blurred
version of the scene’s radiance. We propose a method combining
Sobolev gradient and Laplacian to stabilize the video sequence, and a
latent image is further found utilizing the “lucky region” method.
The video sequence is stabilized while keeping sharp details, and the
latent image shows more consistent straight edges. We analyze the
well-posedness for the stabilizing PDE and the linear stability of the
numerical scheme.

HOST:

Dr. Peter Blomgren.

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