Compressive light field photography using overcomplete dictionaries and optimized projections
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- Kshitij Marwah
- MIT Media Lab
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- Gordon Wetzstein
- MIT Media Lab
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- Yosuke Bando
- Toshiba Corporation and MIT Media Lab
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- Ramesh Raskar
- MIT Media Lab
Description
<jats:p>Light field photography has gained a significant research interest in the last two decades; today, commercial light field cameras are widely available. Nevertheless, most existing acquisition approaches either multiplex a low-resolution light field into a single 2D sensor image or require multiple photographs to be taken for acquiring a high-resolution light field. We propose a compressive light field camera architecture that allows for higher-resolution light fields to be recovered than previously possible from a single image. The proposed architecture comprises three key components: light field atoms as a sparse representation of natural light fields, an optical design that allows for capturing optimized 2D light field projections, and robust sparse reconstruction methods to recover a 4D light field from a single coded 2D projection. In addition, we demonstrate a variety of other applications for light field atoms and sparse coding, including 4D light field compression and denoising.</jats:p>
Journal
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- ACM Transactions on Graphics
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ACM Transactions on Graphics 32 (4), 1-12, 2013-07-21
Association for Computing Machinery (ACM)
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Details 詳細情報について
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- CRID
- 1361981471090582784
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- ISSN
- 15577368
- 07300301
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- Data Source
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- Crossref