Title

Log-ratio measurements-based accurate non-iterative algorithm in diffuse optical tomography for sparsely localized optical parameter variations

Alternative Title

희소 영역 광학 계수 변화량을 이용한 Log-ratio 측정값 기반의 산란 광 단층촬영 비 반복 복원 알고리즘

DGIST Authors

Kihwan Kim ; Okkyun Lee ; Kijoon Lee

Advisor

이옥균

Co-Advisor(s)

Kijoon Lee

Issued Date

2021

Awarded Date

2021/02

Citation

Kihwan Kim. (2021). Log-ratio measurements-based accurate non-iterative algorithm in diffuse optical tomography for sparsely localized optical parameter variations. doi: 10.22677/thesis.200000362068

Type

Thesis

Subject

Diffuse optical tomography, Compressed sensing, Rytov approximation, 산란 광 단층촬영, 압축 센싱, Rytov 근사법

Table Of Contents

I. Introduction 1
II. Methods 3
1. Problem Formulation 3
2. Proposed Method 4
2.1 Joint sparse recovery problem 4
2.2 1st step: Sparse signal recovery 6
2.3 2nd step: Estimation of unknown fluence 7
2.4 3rd step: Estimation of optical parameters variations 7
III. Results 9
1. Simulation Setting 9
2. Reconstruct Results 11
2.1 Reconstruction of 𝛿𝜇𝑎 only (𝛿𝜇𝑠′ =0) 11
2.2 Reconstruction of both 𝛿𝜇𝑎 and 𝛿𝐷 (𝛿𝜇𝑠′ =0 𝑜𝑟 1) 11
VI. Conclusion 13

URI

http://dgist.dcollection.net/common/orgView/200000362068
http://hdl.handle.net/20.500.11750/16654

DOI

10.22677/thesis.200000362068

Degree

Master

Department

Robotics Engineering

Publisher

DGIST

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