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Reconstructing 3D Geometries for Scientific Applications: An Image to Simulation Pipeline
Reconstructing 3D Geometries for Scientific Applications: An Image to Simulation Pipeline
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151410
- ISBN
- 9798384450290
- DDC
- 004
- 서명/저자
- Reconstructing 3D Geometries for Scientific Applications: An Image to Simulation Pipeline
- 발행사항
- [Sl] : University of California, Berkeley, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 95 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Colella, Phillip;Darrell, Trevor.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2024.
- 초록/해제
- 요약Numerical simulation is a powerful tool that aids scientists in the understanding of the physics of the world around them, but to achieve an understanding of the physics, we must start with a representation of the geometry. Embedded Boundary (EB) simulation provides robust, automatic handling of complex geometries, enabling large scale physics simulations, but it still depends on an initial 3D implicit function representation of said geometry. These geometries are typically user-supplied through 3D design specifications, but for many domains of interest (i.e. outdoor scenes such as cities or forests) no such design specifications exist. This means that simulations of this nature rely on expensive, time consuming, and often noisy measurements from LiDAR or other sources, and because of the cost and lack of quality in the results, there have been relatively few 3D, large scale EB simulations of outdoor scenes. Recent advances in computer vision, such as Neural Radiance Fields (NeRFs) and their corresponding Neural Signed Distance Functions (NeuS) have made producing 3D implicit functions from images much easier, but they have not yet been studied from the view point of numerical simulation. In this thesis, we present for the first time a 3D simulation using the Embedded Boundary method on a neural-SDF learned from images, demonstrating the feasibility of this approach. In the process, we identify several challenges in bridging the two methods, including differences in how the computer vision community measures error/uncertainty and what types of error/uncertainty actually matter in an EB simulation, and present appropriate alternatives. In the following chapters, we describe several methods for learning 3D geometries from RGB images, discuss their suitability for scientific tasks, and do an in-depth analysis of their error and uncertainty and how those affect a physics simulation. We finally discuss this pipeline through the lens of a high-impact, real-world application: forest management. We reconstruct a forest scene using NeRF that is visibly much more appropriate for simulation than previous examples. We also discuss what challenges this real-world data presents and how the technology presented in this thesis can be used to answer real scientific questions.
- 일반주제명
- Computer science
- 일반주제명
- Applied mathematics
- 일반주제명
- Fluid mechanics
- 키워드
- Computer vision
- 기타저자
- University of California, Berkeley Applied Science & Technology
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798384450290
■035 ▼a(MiAaPQ)AAI31292649
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a004
■1001 ▼aRamirez de Chanlatte, Marissa Isabella.
■24510▼aReconstructing 3D Geometries for Scientific Applications: An Image to Simulation Pipeline
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a95 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Colella, Phillip;Darrell, Trevor.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2024.
■520 ▼aNumerical simulation is a powerful tool that aids scientists in the understanding of the physics of the world around them, but to achieve an understanding of the physics, we must start with a representation of the geometry. Embedded Boundary (EB) simulation provides robust, automatic handling of complex geometries, enabling large scale physics simulations, but it still depends on an initial 3D implicit function representation of said geometry. These geometries are typically user-supplied through 3D design specifications, but for many domains of interest (i.e. outdoor scenes such as cities or forests) no such design specifications exist. This means that simulations of this nature rely on expensive, time consuming, and often noisy measurements from LiDAR or other sources, and because of the cost and lack of quality in the results, there have been relatively few 3D, large scale EB simulations of outdoor scenes. Recent advances in computer vision, such as Neural Radiance Fields (NeRFs) and their corresponding Neural Signed Distance Functions (NeuS) have made producing 3D implicit functions from images much easier, but they have not yet been studied from the view point of numerical simulation. In this thesis, we present for the first time a 3D simulation using the Embedded Boundary method on a neural-SDF learned from images, demonstrating the feasibility of this approach. In the process, we identify several challenges in bridging the two methods, including differences in how the computer vision community measures error/uncertainty and what types of error/uncertainty actually matter in an EB simulation, and present appropriate alternatives. In the following chapters, we describe several methods for learning 3D geometries from RGB images, discuss their suitability for scientific tasks, and do an in-depth analysis of their error and uncertainty and how those affect a physics simulation. We finally discuss this pipeline through the lens of a high-impact, real-world application: forest management. We reconstruct a forest scene using NeRF that is visibly much more appropriate for simulation than previous examples. We also discuss what challenges this real-world data presents and how the technology presented in this thesis can be used to answer real scientific questions.
■590 ▼aSchool code: 0028.
■650 4▼aComputer science
■650 4▼aApplied mathematics
■650 4▼aFluid mechanics
■653 ▼a3D reconstruction models
■653 ▼aComputational fluid dynamics
■653 ▼aComputer vision
■653 ▼aUncertainty quantification
■690 ▼a0984
■690 ▼a0364
■690 ▼a0204
■71020▼aUniversity of California, Berkeley▼bApplied Science & Technology.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161542▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


