Title :
Spread spectrum for interferometric and magnetic resonance imaging
Author :
Puy, G. ; Wiaux, Y. ; Gruetter, R. ; Thiran, J. -Ph ; Van de Ville, D. ; Vandergheynst, P.
Author_Institution :
Inst. of Electr. Eng., Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
Abstract :
We consider images probed through incomplete and noisy Fourier coverages, both in the context of radio interferometry (RI) and of magnetic resonance imaging (MRI). We show that the quality of signal reconstruction can be significantly enhanced by the introduction of a linear chirp modulation, which induces a spread spectrum phenomenon.
Keywords :
chirp modulation; image processing; magnetic resonance imaging; signal reconstruction; spread spectrum communication; interferometric imaging; linear chirp modulation; magnetic resonance imaging; noisy Fourier coverages; radio interferometry; signal reconstruction; spread spectrum phenomenon; Compressed sensing; Dictionaries; Extraterrestrial measurements; Image coding; Image reconstruction; Magnetic resonance imaging; Radio interferometry; Signal processing; Signal reconstruction; Spread spectrum communication; compressed sensing; image processing; magnetic resonance imaging; radio interferometry;
Conference_Titel :
Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-4295-9
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2010.5496198
