Hand-held Schlieren Photography with Light Field probes
Name
Raskar_Hand-held schlieren.pdf
Size
2.32 MB
Format
Adobe PDF
Checksum (MD5)
2e88b8614110a03e2a146fe3509e02da
Author(s)
Wetzstein, Gordon
Raskar, Ramesh
Heidrich, Wolfgang
Date Issued
April 2011
Journal
Proceedings of the 2011 IEEE International Conference on Computational Photography (ICCP)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Wetzstein, Gordon, Ramesh Raskar, and Wolfgang Heidrich. “Hand-held Schlieren Photography with Light Field probes.” In 2011 IEEE International Conference on Computational Photography (ICCP), 1-8.
Version
Author's final manuscript
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.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/ICCPHOT.2011.5753123
