Application of wavelet-based POCS super-resolution for cardiovascular MRI image enhancement

Author

Hsu, J.T. ; Yen, C.C. ; Li, C.C. ; Sun, M. ; Tian, B. ; Kaygusuz, M.

Author_Institution

Dept. of Electr. Eng., Pittsburgh Univ., PA, USA

fYear

2004

fDate

18-20 Dec. 2004

Firstpage

572

Lastpage

575

Abstract

This paper presents a study of applying an image superresolution method to enhance spatial resolution of MRI heart images from a temporal sequence. The particular method is a wavelet-based projection-onto-convex-set superresolution reconstruction. It makes use of the non-stationary effect in the successive images in the sequence to extract some detail information for image reconstruction at a higher spatial resolution. Our experimental result shows better visual quality than that obtained by using the cubic-spline interpolation.

Keywords

biomedical MRI; cardiovascular system; feature extraction; image enhancement; image reconstruction; image resolution; interpolation; medical image processing; splines (mathematics); wavelet transforms; cubic-spline interpolation; image reconstruction; image superresolution method; projection-onto-convex-set superresolution reconstruction; spatial resolution of MRI heart image; temporal sequence; wavelet-based POCS super-resolution; Cardiology; Data mining; Frequency; Heart; Image enhancement; Image reconstruction; Image resolution; Magnetic resonance imaging; Noise measurement; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Graphics (ICIG'04), Third International Conference on

Conference_Location

Hong Kong, China

Print_ISBN

0-7695-2244-0

Type

conf

DOI

10.1109/ICIG.2004.38

Filename

1410509