AccurateiImage registration using approximate Strang-Fix and an application in image super-resolution
File(s)1569925475.pdf (266.75 KB)
Accepted version
Author(s)
Dragotti, P
scholefield
Type
Conference Paper
Abstract
Accurate registration is critical to most multi-channel signal processing setups, including image super-resolution. In this paper we use modern sampling theory to propose a new robust registration algorithm that works with arbitrary sampling kernels. The algorithm accurately approximates continuous-time Fourier coefficients from discrete-time samples. These Fourier coefficients can be used to construct an over-complete system, which can be solved to approximate translational motion at around 100-th of a pixel accuracy. The over-completeness of the system provides robustness to noise and other modelling errors. For example we show an image registration result for images that have slightly different backgrounds, due to a viewpoint translation. Our previous registration techniques, based on similar sampling theory, can provide a similar accuracy but not under these more general conditions. Simulation results demonstrate the accuracy and robustness of the approach and demonstrate the potential applications in image super-resolution.
Date Issued
2014-11-13
Date Acceptance
2014-05-10
Citation
2014
ISSN
2076-1465
Publisher
IEEE
Copyright Statement
© 2014 EUSIPCo.
Sponsor
Commission of the European Communities
Grant Number
277800
Source
EUSIPCO
Publication Status
Published
Start Date
2014-09-01
Finish Date
2014-09-05
Coverage Spatial
Lisbon, Portugal