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Edge localisation in MRI for images with signal-dependent noise

journal contribution
posted on 2023-05-18, 11:56 authored by Aarya, I, Jiang, D, Timothy GaleTimothy Gale
A new edge localisation technique for step edges in images with signal dependent Rician noise in MRI is proposed. Dependent noise can not only affect the detection of true edges in an image but also their position. Inaccurate localisation of an edge can lead to insufficient segmentation and reduce the overall accuracy of any edge detection method. The proposed technique uses higher-order moments of the noise function to determine the correction factor for localisation and thus reduce the overall mean square error for true edge localisation due to noise. The proposed technique offers significant improvement in edge localisation for an image as compared with Canny and Sobel methods.

History

Publication title

Electronics Letters

Volume

51

Issue

15

Pagination

1151-1153

ISSN

0013-5194

Department/School

School of Engineering

Publisher

Iee-Inst Elec Eng

Place of publication

Michael Faraday House Six Hills Way Stevenage, Hertford, England, Sg1 2Ay

Rights statement

© The Institution of Engineering and Technology 2015

Repository Status

  • Restricted

Socio-economic Objectives

Diagnosis of human diseases and conditions

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