Hand-held Schlieren photography with light field probes

Gordon Wetzstein*, Ramesh Raskar, Wolfgang Heidrich

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

42 Scopus citations

Abstract

We introduce a new approach to capturing refraction in transparent media, which we call Light Field Background Oriented Schlieren Photography (LFBOS). By optically coding the locations and directions of light rays emerging from a light field probe, we can capture changes of the refractive index field between the probe and a camera or an observer. Rather than using complicated and expensive optical setups as in traditional Schlieren photography we employ commodity hardware; our prototype consists of a camera and a lenslet array. By carefully encoding the color and intensity variations of a 4D probe instead of a diffuse 2D background, we avoid expensive computational processing of the captured data, which is necessary for Background Oriented Schlieren imaging (BOS). We analyze the benefits and limitations of our approach and discuss application scenarios.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Computational Photography, ICCP 2011
DOIs
StatePublished - May 23 2011
Event2011 IEEE International Conference on Computational Photography, ICCP 2011 - Pittsburgh, PA, United States
Duration: Apr 8 2011Apr 10 2011

Publication series

Name2011 IEEE International Conference on Computational Photography, ICCP 2011

Other

Other2011 IEEE International Conference on Computational Photography, ICCP 2011
CountryUnited States
CityPittsburgh, PA
Period04/8/1104/10/11

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Vision and Pattern Recognition

Fingerprint Dive into the research topics of 'Hand-held Schlieren photography with light field probes'. Together they form a unique fingerprint.

Cite this