| dc.contributor.author |
Zhang, Fan. |
| dc.contributor.author |
Yoo, Yang Mo. |
| dc.contributor.author |
Koh, Liang Mong. |
| dc.contributor.author |
Kim, Yong Min. |
| dc.date.accessioned |
2010-08-20T06:54:43Z |
| dc.date.available |
2010-08-20T06:54:43Z |
| dc.date.copyright |
2007 |
| dc.date.issued |
2010-08-20T06:54:43Z |
| dc.identifier.citation |
Zhang, F., Yoo, Y. M., Koh, L. M. & Kim, Y. M. (2007). Nonlinear diffusion in Laplacian pyramid domain for ultrasonic speckle reduction. IEEE Transactions on Medical Imaging, 26(2), 200-211. |
| dc.identifier.issn |
0278-0062 |
| dc.identifier.uri |
http://hdl.handle.net/10220/6337 |
| dc.description.abstract |
A new speckle reduction method, i.e., Laplacian
pyramid-based nonlinear diffusion (LPND), is proposed for medical
ultrasound imaging. With this method, speckle is removed
by nonlinear diffusion filtering of bandpass ultrasound images
in Laplacian pyramid domain. For nonlinear diffusion in each
pyramid layer, a gradient threshold is automatically determined
by a variation of median absolute deviation (MAD) estimator.
The performance of the proposed LPND method has been compared
with that of other speckle reduction methods, including
the recently proposed speckle reducing anisotropic diffusion
(SRAD) and nonlinear coherent diffusion (NCD). In simulation
and phantom studies, an average gain of 1.55 dB and 1.34 dB
in contrast-to-noise ratio was obtained compared to SRAD and
NCD, respectively. The visual comparison of despeckled in vivo
ultrasound images from liver and carotid artery shows that the
proposed LPND method could effectively preserve edges and
detailed structures while thoroughly suppressing speckle. These
preliminary results indicate that the proposed speckle reduction
method could improve image quality and the visibility of small
structures and fine details in medical ultrasound imaging. |
| dc.format.extent |
12 p. |
| dc.language.iso |
en |
| dc.relation.ispartofseries |
IEEE transactions on medical imaging |
| dc.rights |
© 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| dc.subject |
DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing. |
| dc.title |
Nonlinear diffusion in Laplacian pyramid domain for ultrasonic speckle reduction. |
| dc.type |
Journal Article |
| dc.contributor.school |
School of Electrical and Electronic Engineering |
| dc.identifier.doi |
http://dx.doi.org/10.1109/TMI.2006.889735 |
| dc.description.version |
Published version |
