Reinterpretable Imager: Towards Variable Post-Capture Space, Angle and Time Resolution in Photography

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dc.contributor.authorAgrawal, Amiten_US
dc.contributor.authorVeeraraghavan, Ashoken_US
dc.contributor.authorRaskar, Rameshen_US
dc.date.accessioned2015-02-23T16:43:03Z
dc.date.available2015-02-23T16:43:03Z
dc.date.issued2010en_US
dc.description.abstractWe describe a novel multiplexing approach to achieve tradeoffs in space, angle and time resolution in photography. We explore the problem of mapping useful subsets of time-varying 4D lightfields in a single snapshot. Our design is based on using a dynamic mask in the aperture and a static mask close to the sensor. The key idea is to exploit scene-specific redundancy along spatial, angular and temporal dimensions and to provide a programmable or variable resolution tradeoff among these dimensions. This allows a user to reinterpret the single captured photo as either a high spatial resolution image, a refocusable image stack or a video for different parts of the scene in post-processing.A lightfield camera or a video camera forces a-priori choice in space-angle-time resolution. We demonstrate a single prototype which provides flexible post-capture abilities not possible using either a single-shot lightfield camera or a multi-frame video camera. We show several novel results including digital refocusing on objects moving in depth and capturing multiple facial expressions in a single photo.en_US
dc.description.number2en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume29en_US
dc.identifier.doi10.1111/j.1467-8659.2009.01646.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages763-772en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2009.01646.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titleReinterpretable Imager: Towards Variable Post-Capture Space, Angle and Time Resolution in Photographyen_US
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