Quantitative evaluation of comb-structure correction methods for multispectral fibrescopic imaging.

Authors
Luthman, A Siri 
Yoon, Jonghee 
Gordon, George SD 

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Type
Article
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Abstract

Removing the comb artifact introduced by imaging fibre bundles, or 'fibrescopes', for example in medical endoscopy, is essential to provide high quality images to the observer. Multispectral imaging (MSI) is an emerging method that combines morphological (spatial) and chemical (spectral) information in a single data 'cube'. When a fibrescope is coupled to a spectrally resolved detector array (SRDA) to perform MSI, comb removal is complicated by the demosaicking step required to reconstruct the multispectral data cube. To understand the potential for using SRDAs as multispectral imaging sensors in medical endoscopy, we assessed five comb correction methods with respect to five performance metrics relevant to biomedical imaging applications: processing time, resolution, smoothness, signal and the accuracy of spectral reconstruction. By assigning weights to each metric, which are determined by the particular imaging application, our results can be used to select the correction method to achieve best overall performance. In most cases, interpolation gave the best compromise between the different performance metrics when imaging using an SRDA.

Publication Date
2018-12-12
Online Publication Date
2018-12-12
Acceptance Date
2018-11-13
Keywords
0299 Other Physical Sciences, Diagnostic Radiology, Bioengineering
Journal Title
Sci Rep
Journal ISSN
2045-2322
2045-2322
Volume Title
8
Publisher
Springer Science and Business Media LLC
Sponsorship
Cancer Research Uk (None)
Cancer Research Uk (None)
Engineering and Physical Sciences Research Council (EP/R003599/1)
Engineering and Physical Sciences Research Council (EP/N014588/1)
European Commission (630729)
Medical Research Council (MC_PC_13059)