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dc.contributor.authorKirmani, Ahmed
dc.contributor.authorJeelani, Haris
dc.contributor.authorGoyal, Vivek K.
dc.date.accessioned2012-09-10T17:15:37Z
dc.date.available2012-09-10T17:15:37Z
dc.date.issued2011-10
dc.date.submitted2011-08
dc.identifier.issn1070-9908
dc.identifier.urihttp://hdl.handle.net/1721.1/72596
dc.description.abstractConventional imaging uses steady-state illumination and light sensing with focusing optics; variations of the light field with time are not exploited. We develop a signal processing framework for estimating the reflectance of a Lambertian planar surface in a known position using omnidirectional, time-varying illumination and unfocused, time-resolved sensing in place of traditional optical elements such as lenses and mirrors. Our model associates time sampling of the intensity of light incident at each sensor with a linear functional of . The discrete-time samples are processed to obtain -regularized estimates of . Improving on previous work, using nonimpulsive, bandlimited light sources instead of impulsive illumination significantly improves signal-to-noise ratio (SNR) and reconstruction quality. Our simulations suggest that practical diffuse imaging applications may be realized with commercially-available temporal light intensity modulators and sensors used in standard optical communication systems.en_US
dc.description.sponsorshipNational Science Foundation (U.S.). (Grant number 0643836)en_US
dc.description.sponsorshipUnited States. Defense Advanced Research Projects Agency. Information in a Photon Program (United States. Army Research Office)(Award number W911-NF-10-1-0404)en_US
dc.description.sponsorshipTexas Instruments Leadership University Consortium Programen_US
dc.language.isoen_US
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/lsp.2011.2174222en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alike 3.0en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/en_US
dc.sourceMIT web domainen_US
dc.titleDiffuse Imaging: Creating Optical Images With Unfocused Time-Resolved Illumination and Sensingen_US
dc.typeArticleen_US
dc.identifier.citationKirmani, Ahmed et al. “Diffuse Imaging: Creating Optical Images With Unfocused Time-Resolved Illumination and Sensing.” IEEE Signal Processing Letters 19.1 (2012): 31–34.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Scienceen_US
dc.contributor.departmentMassachusetts Institute of Technology. Research Laboratory of Electronicsen_US
dc.contributor.approverGoyal, Vivek K.
dc.contributor.mitauthorKirmani, Ahmed
dc.contributor.mitauthorGoyal, Vivek K.
dc.relation.journalIEEE Signal Processing Lettersen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsKirmani, Ahmed; Jeelani, Haris; Montazerhodjat, Vahid; Goyal, Vivek Ken
mit.licenseOPEN_ACCESS_POLICYen_US


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