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Article: Holographic near-eye displays based on overlap-add stereograms
Title | Holographic near-eye displays based on overlap-add stereograms |
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Authors | |
Keywords | augmented reality computational displays holography light fields virtual reality |
Issue Date | 2019 |
Citation | ACM Transactions on Graphics, 2019, v. 38, n. 6, article no. 3356517 How to Cite? |
Abstract | Holographic near-eye displays are a key enabling technology for virtual and augmented reality (VR/AR) applications. Holographic stereograms (HS) are a method of encoding a light field into a hologram, which enables them to natively support view-dependent lighting effects. However, existing HS algorithms require the choice of a hogel size, forcing a tradeoff between spatial and angular resolution. Based on the fact that the short-time Fourier transform (STFT) connects a hologram to its observable light field, we develop the overlap-add stereogram (OLAS) as the correct method of "inverting" the light field into a hologram via the STFT. The OLAS makes more efficient use of the information contained within the light field than previous HS algorithms, exhibiting better image quality at a range of distances and hogel sizes. Most remarkably, the OLAS does not degrade spatial resolution with increasing hogel size, overcoming the spatio-angular resolution tradeoff that previous HS algorithms face. Importantly, the optimal hogel size of previous methods typically varies with the depth of every object in a scene, making the OLAS not only a hogel size-invariant method, but also nearly scene independent. We demonstrate the performance of the OLAS both in simulation and on a prototype near-eye display system, showing focusing capabilities and view-dependent effects. |
Persistent Identifier | http://hdl.handle.net/10722/315315 |
ISSN | 2023 Impact Factor: 7.8 2023 SCImago Journal Rankings: 7.766 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Padmanaban, Nitish | - |
dc.contributor.author | Peng, Yifan | - |
dc.contributor.author | Wetzstein, Gordon | - |
dc.date.accessioned | 2022-08-05T10:18:26Z | - |
dc.date.available | 2022-08-05T10:18:26Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | ACM Transactions on Graphics, 2019, v. 38, n. 6, article no. 3356517 | - |
dc.identifier.issn | 0730-0301 | - |
dc.identifier.uri | http://hdl.handle.net/10722/315315 | - |
dc.description.abstract | Holographic near-eye displays are a key enabling technology for virtual and augmented reality (VR/AR) applications. Holographic stereograms (HS) are a method of encoding a light field into a hologram, which enables them to natively support view-dependent lighting effects. However, existing HS algorithms require the choice of a hogel size, forcing a tradeoff between spatial and angular resolution. Based on the fact that the short-time Fourier transform (STFT) connects a hologram to its observable light field, we develop the overlap-add stereogram (OLAS) as the correct method of "inverting" the light field into a hologram via the STFT. The OLAS makes more efficient use of the information contained within the light field than previous HS algorithms, exhibiting better image quality at a range of distances and hogel sizes. Most remarkably, the OLAS does not degrade spatial resolution with increasing hogel size, overcoming the spatio-angular resolution tradeoff that previous HS algorithms face. Importantly, the optimal hogel size of previous methods typically varies with the depth of every object in a scene, making the OLAS not only a hogel size-invariant method, but also nearly scene independent. We demonstrate the performance of the OLAS both in simulation and on a prototype near-eye display system, showing focusing capabilities and view-dependent effects. | - |
dc.language | eng | - |
dc.relation.ispartof | ACM Transactions on Graphics | - |
dc.subject | augmented reality | - |
dc.subject | computational displays | - |
dc.subject | holography | - |
dc.subject | light fields | - |
dc.subject | virtual reality | - |
dc.title | Holographic near-eye displays based on overlap-add stereograms | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1145/3355089.3356517 | - |
dc.identifier.scopus | eid_2-s2.0-85078916698 | - |
dc.identifier.volume | 38 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | article no. 3356517 | - |
dc.identifier.epage | article no. 3356517 | - |
dc.identifier.eissn | 1557-7368 | - |
dc.identifier.isi | WOS:000498397300063 | - |