Title :
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
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;
Conference_Titel :
Image and Graphics (ICIG'04), Third International Conference on
Conference_Location :
Hong Kong, China
Print_ISBN :
0-7695-2244-0
DOI :
10.1109/ICIG.2004.38
