Your browser doesn't support javascript.
loading
Robust wavelet-based super-resolution reconstruction: theory and algorithm.
Ji, Hui; Fermüller, Cornelia.
Afiliación
  • Ji H; Department of Mathematics, National University of Singapore, Singapore. matjh@nus.edu.sg
IEEE Trans Pattern Anal Mach Intell ; 31(4): 649-60, 2009 Apr.
Article en En | MEDLINE | ID: mdl-19229081
ABSTRACT
We present an analysis and algorithm for the problem of super-resolution imaging, that is the reconstruction of HR (high-resolution) images from a sequence of LR (low-resolution) images. Super-resolution reconstruction entails solutions to two problems. One is the alignment of image frames. The other is the reconstruction of a HR image from multiple aligned LR images. Both are important for the performance of super-resolution imaging. Image alignment is addressed with a new batch algorithm, which simultaneously estimates the homographies between multiple image frames by enforcing the surface normal vectors to be the same. This approach can handle longer video sequences quite well. Reconstruction is addressed with a wavelet-based iterative reconstruction algorithm with an efficient denoising scheme. The technique is based on a new analysis of video formation. At a high level our method could be described as a better-conditioned iterative back projection scheme with an efficient regularization criteria in each iteration step. Experiments with both simulated and real data demonstrate that our approach has better performance than existing super-resolution methods. It can remove even large amounts of mixed noise without creating artifacts.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: IEEE Trans Pattern Anal Mach Intell Asunto de la revista: INFORMATICA MEDICA Año: 2009 Tipo del documento: Article País de afiliación: Singapur

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: IEEE Trans Pattern Anal Mach Intell Asunto de la revista: INFORMATICA MEDICA Año: 2009 Tipo del documento: Article País de afiliación: Singapur
...