Abstract
Complex images from different processes are often acquired with a low signal to noise ratio, as it is the case with Magnetic Resonance Imaging. Noise filtering is used to recover the associated phase images, mitigating negative effects such as loss of contrast and the introduction of phase residues, which constitute a major drawback for phase unwrapping processes. In this work, a group of algorithms combining nonlinear filters and wavelet de-noising were developed and applied to MRI images, in order to recover the phase information. The results obtained with the two algorithms that exhibited the best performance when applied to both phantom and real images, are shown. Application of these algorithms resulted in improvements both in terms of SNR and of the decrement in the number of phase residues.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Sprawls, P.: Physical principles of medical imaging, 2nd edn. Medical Physics Publishing Corporation, Madison, Wisconsin (2000)
Alexander, M.E., Baumgartner, R., Summers, A., Windischberger, C., Klarhoefer, M., Moser, E., Somorjai, R.L.: A Wavelet-based Method for Improving Signal-to-noise Ratio and Contrast in MR Images. Magnetic Resonance Imaging 18, 169–180 (2000)
Nowak, R.D.: Wavelet-Based Rician Noise Removal for Magnetic Resonance Imaging. IEEE Trans. on Image Processing 8(10), 1408–1419 (1999)
López Martínez, C., Fábregas, X.: Modeling and Reduction of SAR Interferometric Phase Noise in the Wavelet Domain. IEEE Transactions on Geoscience and Remote Sensing 40(12), 2553–2566 (2002)
Ferraiuolo, G., Poggi, G.A.: Bayesian Filtering Technique for SAR Interferometric Phase Fields. IEEE Transactions on Image Processing 13(10), 1368–1378 (2004)
Lorenzo-Ginori, J.V., Plataniotis, K.N., Venetsanopoulos, A.N.: Nonlinear Filtering for Phase Image Denoising. In: IEEE Proceedings-Vision, Image and Signal Processing, vol. 149, pp. 290–296 (2002)
Cruz-Enriquez, H., Lorenzo-Ginori, J.V.: Wavelet-based methods for improving signal-to-noise ratio in phase images. In: Kamel, M.S., Campilho, A.C. (eds.) ICIAR 2005. LNCS, vol. 3656, pp. 247–254. Springer, Heidelberg (2005)
Cruz-Enríquez, H., Lorenzo-Ginori, J.V.: Noise Reduction in Phase Images for Applications in Magnetic Resonance. In: IFMBE Proceedings, vol. 18, pp. 263–266 (2007)
Gallegos-Funes, F.J., Martínez-Valdes, J., De-la-Rosa-Vázquez, J.M.: Order Statistics Filters in Wavelet Domain for Color Image Processing. In: Proceedings of the 6th Mexican International Conference on Artificial Intelligence, Aguascalientes, November 4-20 (2007)
Misiti, M., Misiti, Y., Oppenheim, G., Poggi, J.-M.: Wavelet Toolbox, For Use with Matlab, The MathWorks, Natick (2002)
Chen, Y., Han, C.: Adaptive Wavelet Threshold for Image Denoising. Electronic Letters 41(10), 586–587 (2005)
Braunisch, H., Bae-Ian, W., Kong, J.: Phase unwrapping of SAR interferograms after wavelet de-noising. In: Proceedings of the IEEE Geoscience and Remote Sensing Symposium, IGARSS, vol. 2, pp. 752–754 (2000)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Cruz-Enríquez, H., Lorenzo-Ginori, J.V. (2009). Combined Wavelet and Nonlinear Filtering for MRI Phase Images. In: Kamel, M., Campilho, A. (eds) Image Analysis and Recognition. ICIAR 2009. Lecture Notes in Computer Science, vol 5627. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02611-9_9
Download citation
DOI: https://doi.org/10.1007/978-3-642-02611-9_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-02610-2
Online ISBN: 978-3-642-02611-9
eBook Packages: Computer ScienceComputer Science (R0)