Cornell University
Library
Cornell UniversityLibrary

eCommons

Help
Log In(current)
  1. Home
  2. Cornell University Graduate School
  3. Cornell Theses and Dissertations
  4. Learning Geometry, Appearance and Motion in the Wild

Learning Geometry, Appearance and Motion in the Wild

File(s)
Li_cornellgrad_0058F_12435.pdf (53.8 MB)
Permanent Link(s)
https://doi.org/10.7298/x53b-a512
https://hdl.handle.net/1813/109762
Collections
Cornell Theses and Dissertations
Author
Li, Zhengqi
Abstract

Physics-based computer vision can be formulated as an inverse process of graphics rendering engine: we seek to take RGB images and recover the intrinsic properties of a scene, including geometry, material, illumination, and object motions. Computer vision as inverse graphics plays an important role in numerous real-world applications such as virtual reality, in which recovered scene intrinsics can be further used to render images at novel viewpoints with plausible lighting. However, most previous techniques either require a multi-camera setup or assume that the underlying scene is static, i.e., that the appearance and geometry do not change over time. In contrast, the photos we see on the Internet only constitute a single view observation for each scene; the videos often involve dynamics due to a variety of time-varying factors such as illumination changes and object motions. Therefore, In this thesis, I address these problems to in-the-wild scenarios by leveraging a compelling source of data: massive quantities of unlabeled photos and videos people take and upload to the Internet every day. I demonstrate how to make use of such massive but noisy visual data to capture scene geometry, appearance, lighting, and motions from a single RGB image or videos of dynamic scenes, which further enables me to synthesize photo-realistic novel view in both space and time.

Description
265 pages
Date Issued
2021-05
Keywords
depth estimation
•
intrinsic image decomposition
•
inverse graphics
•
novel view synthesis
Committee Chair
Snavely, Noah
Committee Member
Naaman, Mor
Belongie, Serge J.
Degree Discipline
Computer Science
Degree Name
Ph. D., Computer Science
Degree Level
Doctor of Philosophy
Rights
Attribution 4.0 International
Rights URI
https://creativecommons.org/licenses/by/4.0/
Type
dissertation or thesis
Link(s) to Catalog Record
https://newcatalog.library.cornell.edu/catalog/15049422

Site Statistics | Help

About eCommons | Policies | Terms of use | Contact Us

copyright © 2002-2026 Cornell University Library | Privacy | Web Accessibility Assistance