DocumentCode
2030520
Title
Fast Super-Resolution for Rational Magnification Factors
Author
Pelletier, Stéphane ; Cooperstock, Jeremy R.
Author_Institution
McGill Univ., Montreal
Volume
2
fYear
2007
fDate
Sept. 16 2007-Oct. 19 2007
Abstract
Super-resolution (SR) is a technique that generates a high-resolution (HR) image from a set of low-resolution (LR) ones. Previous preconditioning methods for SR did not consider the case of rational magnification factors. In this paper, a method for preconditioning SR problems involving such factors is presented. We show that by reordering the pixels of the observed LR images, the structure of the linear problem to solve is modified in such a way that preconditioners based on circulant operators can be used. Simulations with magnification factors of practical interest demonstrate the effectiveness of our approach.
Keywords
image resolution; linear systems; matrix algebra; fast super-resolution; linear problem; preconditioning SR problem; rational magnification factor; Acceleration; Bismuth; Cameras; Equations; Image resolution; Image restoration; Linear systems; Pixel; Strontium; Vectors; Super-resolution; image restoration; linear systems; preconditioning;
fLanguage
English
Publisher
ieee
Conference_Titel
Image Processing, 2007. ICIP 2007. IEEE International Conference on
Conference_Location
San Antonio, TX
ISSN
1522-4880
Print_ISBN
978-1-4244-1437-6
Electronic_ISBN
1522-4880
Type
conf
DOI
10.1109/ICIP.2007.4379093
Filename
4379093
Link To Document