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Multi-dimensional Optical Imaging
Multi-dimensional Optical Imaging
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151400
- ISBN
- 9798382372884
- DDC
- 610
- 저자명
- Cui, Qi.
- 서명/저자
- Multi-dimensional Optical Imaging
- 발행사항
- [Sl] : University of California, Los Angeles, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 112 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
- 주기사항
- Advisor: Gao, Liang.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2024.
- 초록/해제
- 요약Imaging systems capture light rays contain rich information, which can be described by the plenoptic function, \uD835\uDC43(\uD835\uDC65, \uD835\uDC66, \uD835\uDC67, \uD835\uDC62, \uD835\uDC63, \uD835\uDF06, \uD835\uDC61)-where \uD835\uDC65, \uD835\uDC66, \uD835\uDC67 represent spatial coordinates; \uD835\uDC62, \uD835\uDC63 denote emittance angles; \uD835\uDF06 signifies wavelength; and \uD835\uDC61 denotes time. Given a finite photon budget, it is crucial for an imaging system to maximize the information yield from each captured image. Yet, traditional cameras only capture two-dimensional spatial data (\uD835\uDC65, \uD835\uDC66), neglecting the wealth of information.Capturing multi-dimensional information presents significant challenges, primarily due to the complexity of mapping high-dimensional datacubes onto a two-dimensional detector array. This mapping process introduces a fundamental trade-off among various axes of information, such as spatial, angular, and spectral dimensions, which can adversely affect imaging speed, resolution, and other critical parameters. Balancing of these factors often leads to compromises in one aspect to enhance another, pose a significant challenge in designing and implementing a multi-dimensional imaging system.In response to these challenges, this dissertation presents three innovative multi-dimensional optical imaging systems. The first system, snapshot hyperspectral light field imaging utilizing image mapping spectrometer (LF-IMS), represents a five-dimensional (\uD835\uDC65, \uD835\uDC66, \uD835\uDC62, \uD835\uDC63, \uD835\uDF06) imaging system. It is uniquely designed to maintain full light throughput, enabling the capture of detailed three-dimensional spatial and spectral information without sacrificing efficiency. The second system, snapshot hyperspectral light field tomography (Hyper-LIFT), leverages compressed sensing to facilitate five-dimensional (\uD835\uDC65, \uD835\uDC66, \uD835\uDC62, \uD835\uDC63, \uD835\uDF06) imaging. This approach significantly alleviates the tradeoff between different dimensions of information, allowing for capturing an input scene with a more compact sensor, thereby greatly reducing the volume of data generated during image acquisition. The third system, the tunable image projection spectrometer (TIPS), is a Fourier-domain line-scan hyperspectral imager with a tunable compression ratio. Compared to state-of-the-art spatial-domain pushbroom hyperspectral cameras, TIPS requires much fewer measurements and provides a higher light throughput.Furthermore, this dissertation will explore the impact of optical aberrations on the image quality in light field imaging, providing insights into how these imperfections influence the overall imaging performance. A lens design pipeline is proposed to mitigate key aberrations, and its effectiveness is demonstrated through the design of a light field endoscope. Additionally, a rapid calibration method has been proposed for a compact hyperspectral camera, termed the image mapping spectrometer (IMS), reducing the calibration time from weeks to hours.
- 일반주제명
- Bioengineering
- 일반주제명
- Optics
- 일반주제명
- Health sciences
- 일반주제명
- Medical imaging
- 일반주제명
- Analytical chemistry
- 키워드
- Imaging systems
- 키워드
- Optical imaging
- 키워드
- Datacubes
- 기타저자
- University of California, Los Angeles Bioengineering 0288
- 기본자료저록
- Dissertations Abstracts International. 85-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017161468
■00520250211151400
■006m o d
■007cr#unu||||||||
■020 ▼a9798382372884
■035 ▼a(MiAaPQ)AAI31244287
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a610
■1001 ▼aCui, Qi.
■24510▼aMulti-dimensional Optical Imaging
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a112 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-11, Section: B.
■500 ▼aAdvisor: Gao, Liang.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2024.
■520 ▼aImaging systems capture light rays contain rich information, which can be described by the plenoptic function, \uD835\uDC43(\uD835\uDC65, \uD835\uDC66, \uD835\uDC67, \uD835\uDC62, \uD835\uDC63, \uD835\uDF06, \uD835\uDC61)-where \uD835\uDC65, \uD835\uDC66, \uD835\uDC67 represent spatial coordinates; \uD835\uDC62, \uD835\uDC63 denote emittance angles; \uD835\uDF06 signifies wavelength; and \uD835\uDC61 denotes time. Given a finite photon budget, it is crucial for an imaging system to maximize the information yield from each captured image. Yet, traditional cameras only capture two-dimensional spatial data (\uD835\uDC65, \uD835\uDC66), neglecting the wealth of information.Capturing multi-dimensional information presents significant challenges, primarily due to the complexity of mapping high-dimensional datacubes onto a two-dimensional detector array. This mapping process introduces a fundamental trade-off among various axes of information, such as spatial, angular, and spectral dimensions, which can adversely affect imaging speed, resolution, and other critical parameters. Balancing of these factors often leads to compromises in one aspect to enhance another, pose a significant challenge in designing and implementing a multi-dimensional imaging system.In response to these challenges, this dissertation presents three innovative multi-dimensional optical imaging systems. The first system, snapshot hyperspectral light field imaging utilizing image mapping spectrometer (LF-IMS), represents a five-dimensional (\uD835\uDC65, \uD835\uDC66, \uD835\uDC62, \uD835\uDC63, \uD835\uDF06) imaging system. It is uniquely designed to maintain full light throughput, enabling the capture of detailed three-dimensional spatial and spectral information without sacrificing efficiency. The second system, snapshot hyperspectral light field tomography (Hyper-LIFT), leverages compressed sensing to facilitate five-dimensional (\uD835\uDC65, \uD835\uDC66, \uD835\uDC62, \uD835\uDC63, \uD835\uDF06) imaging. This approach significantly alleviates the tradeoff between different dimensions of information, allowing for capturing an input scene with a more compact sensor, thereby greatly reducing the volume of data generated during image acquisition. The third system, the tunable image projection spectrometer (TIPS), is a Fourier-domain line-scan hyperspectral imager with a tunable compression ratio. Compared to state-of-the-art spatial-domain pushbroom hyperspectral cameras, TIPS requires much fewer measurements and provides a higher light throughput.Furthermore, this dissertation will explore the impact of optical aberrations on the image quality in light field imaging, providing insights into how these imperfections influence the overall imaging performance. A lens design pipeline is proposed to mitigate key aberrations, and its effectiveness is demonstrated through the design of a light field endoscope. Additionally, a rapid calibration method has been proposed for a compact hyperspectral camera, termed the image mapping spectrometer (IMS), reducing the calibration time from weeks to hours.
■590 ▼aSchool code: 0031.
■650 4▼aBioengineering
■650 4▼aOptics
■650 4▼aHealth sciences
■650 4▼aMedical imaging
■650 4▼aAnalytical chemistry
■653 ▼aCompressed sensing
■653 ▼aHyperspectral imaging
■653 ▼aImaging systems
■653 ▼aLight field imaging
■653 ▼aOptical imaging
■653 ▼aDatacubes
■690 ▼a0202
■690 ▼a0752
■690 ▼a0566
■690 ▼a0574
■690 ▼a0486
■71020▼aUniversity of California, Los Angeles▼bBioengineering 0288.
■7730 ▼tDissertations Abstracts International▼g85-11B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161468▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
