Light transport refocusing for unknown scattering medium

Md Abdul Mannan, Seiichi Tagawa, Toru Tamaki, Hajime Nagahara, Yasuhiro Mukaigawa, Yasushi Yagi

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

Abstract

In this paper we propose a new light transport refocusing method for depth estimation as well as for investigation inside scattering media with unknown scattering properties. Propagated visible light rays through scattering media are utilized in our proposed refocusing method. We use 2D light source to illuminate the scattering media and 2D image sensor for capturing transported rays. The proposed method that uses 4D light transport can clearly visualize shallow depth, as well as deep depth plane of the medium. We apply our light transport refocusing method for depth estimation using conventional depth-from-focus method and for clear visualization by descattering the light rays passing through the medium. To evaluate the effectiveness we have done experiments using acrylic and milk-water type scattering medium in various optical and geometrical conditions. Finally, we show up the results of depth estimation and clear visualization, as well as with numeric evaluation.

Original languageEnglish
Title of host publicationProceedings - International Conference on Pattern Recognition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4382-4387
Number of pages6
ISBN (Electronic)9781479952083
DOIs
Publication statusPublished - Dec 4 2014
Event22nd International Conference on Pattern Recognition, ICPR 2014 - Stockholm, Sweden
Duration: Aug 24 2014Aug 28 2014

Other

Other22nd International Conference on Pattern Recognition, ICPR 2014
CountrySweden
CityStockholm
Period8/24/148/28/14

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All Science Journal Classification (ASJC) codes

  • Computer Vision and Pattern Recognition

Cite this

Mannan, M. A., Tagawa, S., Tamaki, T., Nagahara, H., Mukaigawa, Y., & Yagi, Y. (2014). Light transport refocusing for unknown scattering medium. In Proceedings - International Conference on Pattern Recognition (pp. 4382-4387). [6977463] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICPR.2014.750