Compressive light field imaging

Research output: Chapter in Book/Report/Conference proceedingConference contribution

35 Scopus citations

Abstract

Light field imagers such as the plenoptic and the integral imagers inherently measure projections of the four dimensional (4D) light field scalar function onto a two dimensional sensor and therefore, suffer from a spatial vs. angular resolution trade-off. Programmable light field imagers, proposed recently, overcome this spatio-angular resolution trade-off and allow high-resolution capture of the (4D) light field function with multiple measurements at the cost of a longer exposure time. However, these light field imagers do not exploit the spatio-angular correlations inherent in the light fields of natural scenes and thus result in photon-inefficient measurements. Here, we describe two architectures for compressive light field imaging that require relatively few photon-efficient measurements to obtain a high-resolution estimate of the light field while reducing the overall exposure time. Our simulation study shows that, compressive light field imagers using the principal component (PC) measurement basis require four times fewer measurements and three times shorter exposure time compared to a conventional light field imager in order to achieve an equivalent light field reconstruction quality.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7690
DOIs
Publication statusPublished - 2010
EventThree-Dimensional Imaging, Visualization, and Display 2010 and Display Technologies and Applications for Defense, Security, and Avionics IV - Orlando, FL, United States
Duration: Apr 6 2010Apr 8 2010

Other

OtherThree-Dimensional Imaging, Visualization, and Display 2010 and Display Technologies and Applications for Defense, Security, and Avionics IV
CountryUnited States
CityOrlando, FL
Period4/6/104/8/10

    Fingerprint

Keywords

  • Compressive imaging
  • Hadamard
  • Light field
  • Principal component

ASJC Scopus subject areas

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

Cite this

Ashok, A., & Neifeld, M. A. (2010). Compressive light field imaging. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7690). [76900Q] https://doi.org/10.1117/12.852738