Share Email Print
cover

Proceedings Paper

Super-resolution using preconditioned conjugate gradient method
Author(s): Changjiang Yang; Ramani Duraiswami; Larry S. Davis
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper we present a fast iterative image superresolution algorithm using preconditioned conjugate gradient method. To avoid explicitly computing the tolerance in the inverse filter based preconditioner scheme,1 a new Wiener filter based preconditioner for the conjugate gradient method is proposed to speed up the convergence. The circulant-block structure of the preconditioner allows efficient implementation using Fast Fourier Transform. Effectiveness of the preconditioner is demonstrated by superresolution results for simulated image sequences.

Paper Details

Date Published: 31 July 2002
PDF: 8 pages
Proc. SPIE 4875, Second International Conference on Image and Graphics, (31 July 2002); doi: 10.1117/12.477201
Show Author Affiliations
Changjiang Yang, Univ. of Maryland/College Park (United States)
Ramani Duraiswami, Univ. of Maryland/College Park (United States)
Larry S. Davis, Univ. of Maryland/College Park (United States)


Published in SPIE Proceedings Vol. 4875:
Second International Conference on Image and Graphics
Wei Sui, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray