Adaptive Rician denoising with edge preservation for MR images of the articular cartilage

Aarya, Isshaa, Jiang, Danchi and Gale, Timothy (2016) Adaptive Rician denoising with edge preservation for MR images of the articular cartilage. Computer Methods in Biomechanics and Biomedical Engineering-Imaging and Visualization, 4 5: 296-305. doi:10.1080/21681163.2014.922036


Author Aarya, Isshaa
Jiang, Danchi
Gale, Timothy
Title Adaptive Rician denoising with edge preservation for MR images of the articular cartilage
Journal name Computer Methods in Biomechanics and Biomedical Engineering-Imaging and Visualization   Check publisher's open access policy
ISSN 2168-1171
2168-1163
Publication date 2016-09-01
Year available 2014
Sub-type Article (original research)
DOI 10.1080/21681163.2014.922036
Open Access Status Not yet assessed
Volume 4
Issue 5
Start page 296
End page 305
Total pages 10
Place of publication Abingdon, Oxfordshire, United Kingdom
Publisher Taylor & Francis
Collection year 2017
Language eng
Formatted abstract
MR image offers better soft tissue contrast which makes it advantageous for cartilage diagnosis for patients suffering from Osteoarthritis. But magnitude MR images are susceptible to Rician noise which affects image quality leading to incorrect diagnosis. In this paper we propose a novel Rician denoising procedure with edge preservation capability. An adaptive filter with Brown–Forsythe statistical criterion has been implemented to avoid excessive filtering near the edges. Denoising is achieved using a linear minimum mean square estimate of the regional sample, obtained using a modified non-local means estimate within the neighbourhood of the image. The proposed filter was implemented on MR images of the knee, synthetic and a phantom. The efficiency of the denoising procedure was determined using signal-to-noise ratio, root mean square error, quality index based on local variance and contrast-to-noise ratio between true and denoised images of the cartilage. The method was also compared with other existing Rician denoising procedures and showed improved image contrast with edge preservation ability.
Keyword Articular cartilage
Denoising
Edge preservation
MR image
Rician noise
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Centre for Advanced Imaging Publications
 
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