Optical coherence tomography imaging based on Non-Harmonic Analysis

Xu Cao; Shigeki Hirobayashi; Changho Chong; Atsushi Morosawa; Koki Totsuka; Takuya Suzuki

doi:10.1117/12.852173

Optical coherence tomography imaging based on Non-Harmonic Analysis

Xu Cao^*, Shigeki Hirobayashi, Changho Chong, Atsushi Morosawa, Koki Totsuka, Takuya Suzuki

^*Corresponding author for this work

Intellectual Information Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A new processing technique called Non-Harmonic Analysis (NHA) is proposed for OCT imaging. Conventional Fourier-Domain OCT relies on the FFT calculation which depends on the window function and length. Axial resolution is counter proportional to the frame length of FFT that is limited by the swept range of the swept source in SS-OCT, or the pixel counts of CCD in SD-OCT degraded in FD-OCT. However, NHA process is intrinsically free from this trade-offs; NHA can resolve high frequency without being influenced by window function or frame length of sampled data. In this study, NHA process is explained and applied to OCT imaging and compared with OCT images based on FFT. In order to validate the benefit of NHA in OCT, we carried out OCT imaging based on NHA with the three different sample of onion-skin,human-skin and pig-eye. The results show that NHA process can realize practical image resolution that is equivalent to l00nm swept range only with less than half-reduced wavelength range.

Original language	English
Title of host publication	Optical Sensors and Biophotonics
DOIs	https://doi.org/10.1117/12.852173
State	Published - 2009
Event	Optical Sensors and Biophotonics - Shanghai, China Duration: 2009/11/02 → 2009/11/06

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7634
ISSN (Print)	0277-786X

Conference

Conference	Optical Sensors and Biophotonics
Country/Territory	China
City	Shanghai
Period	2009/11/02 → 2009/11/06

Keywords

Axial resolution
Fourier transform
Lasers
Non-harmonic analysis
Optical coherence tomography
Tunable
Wavelength range
Window function

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.852173

Cite this

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title = "Optical coherence tomography imaging based on Non-Harmonic Analysis",

abstract = "A new processing technique called Non-Harmonic Analysis (NHA) is proposed for OCT imaging. Conventional Fourier-Domain OCT relies on the FFT calculation which depends on the window function and length. Axial resolution is counter proportional to the frame length of FFT that is limited by the swept range of the swept source in SS-OCT, or the pixel counts of CCD in SD-OCT degraded in FD-OCT. However, NHA process is intrinsically free from this trade-offs; NHA can resolve high frequency without being influenced by window function or frame length of sampled data. In this study, NHA process is explained and applied to OCT imaging and compared with OCT images based on FFT. In order to validate the benefit of NHA in OCT, we carried out OCT imaging based on NHA with the three different sample of onion-skin,human-skin and pig-eye. The results show that NHA process can realize practical image resolution that is equivalent to l00nm swept range only with less than half-reduced wavelength range.",

keywords = "Axial resolution, Fourier transform, Lasers, Non-harmonic analysis, Optical coherence tomography, Tunable, Wavelength range, Window function",

author = "Xu Cao and Shigeki Hirobayashi and Changho Chong and Atsushi Morosawa and Koki Totsuka and Takuya Suzuki",

year = "2009",

doi = "10.1117/12.852173",

language = "英語",

isbn = "9780819480361",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Optical Sensors and Biophotonics",

note = "Optical Sensors and Biophotonics ; Conference date: 02-11-2009 Through 06-11-2009",

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Cao, X, Hirobayashi, S, Chong, C, Morosawa, A, Totsuka, K & Suzuki, T 2009, Optical coherence tomography imaging based on Non-Harmonic Analysis. in Optical Sensors and Biophotonics., 763406, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7634, Optical Sensors and Biophotonics, Shanghai, China, 2009/11/02. https://doi.org/10.1117/12.852173

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T1 - Optical coherence tomography imaging based on Non-Harmonic Analysis

AU - Cao, Xu

AU - Hirobayashi, Shigeki

AU - Chong, Changho

AU - Morosawa, Atsushi

AU - Totsuka, Koki

AU - Suzuki, Takuya

PY - 2009

Y1 - 2009

N2 - A new processing technique called Non-Harmonic Analysis (NHA) is proposed for OCT imaging. Conventional Fourier-Domain OCT relies on the FFT calculation which depends on the window function and length. Axial resolution is counter proportional to the frame length of FFT that is limited by the swept range of the swept source in SS-OCT, or the pixel counts of CCD in SD-OCT degraded in FD-OCT. However, NHA process is intrinsically free from this trade-offs; NHA can resolve high frequency without being influenced by window function or frame length of sampled data. In this study, NHA process is explained and applied to OCT imaging and compared with OCT images based on FFT. In order to validate the benefit of NHA in OCT, we carried out OCT imaging based on NHA with the three different sample of onion-skin,human-skin and pig-eye. The results show that NHA process can realize practical image resolution that is equivalent to l00nm swept range only with less than half-reduced wavelength range.

AB - A new processing technique called Non-Harmonic Analysis (NHA) is proposed for OCT imaging. Conventional Fourier-Domain OCT relies on the FFT calculation which depends on the window function and length. Axial resolution is counter proportional to the frame length of FFT that is limited by the swept range of the swept source in SS-OCT, or the pixel counts of CCD in SD-OCT degraded in FD-OCT. However, NHA process is intrinsically free from this trade-offs; NHA can resolve high frequency without being influenced by window function or frame length of sampled data. In this study, NHA process is explained and applied to OCT imaging and compared with OCT images based on FFT. In order to validate the benefit of NHA in OCT, we carried out OCT imaging based on NHA with the three different sample of onion-skin,human-skin and pig-eye. The results show that NHA process can realize practical image resolution that is equivalent to l00nm swept range only with less than half-reduced wavelength range.

KW - Axial resolution

KW - Fourier transform

KW - Lasers

KW - Non-harmonic analysis

KW - Optical coherence tomography

KW - Tunable

KW - Wavelength range

KW - Window function

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M3 - 会議への寄与

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SN - 9780819480361

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Optical Sensors and Biophotonics

T2 - Optical Sensors and Biophotonics

Y2 - 2 November 2009 through 6 November 2009

ER -

Optical coherence tomography imaging based on Non-Harmonic Analysis

Abstract

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Conference

Keywords

ASJC Scopus subject areas

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