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10 March 2020 DMD-based scattering assisted imaging with unknown speckle patterns (Conference Presentation)
Marco Leonetti, Alfonso Grimaldi, Silvia Ghirga, Giancarlo Ruocco, Giuseppe Antonacci
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Proceedings Volume 11294, Emerging Digital Micromirror Device Based Systems and Applications XII; 1129404 (2020) https://doi.org/10.1117/12.2537322
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
Standard imaging systems provide a spatial resolution that is ultimately dictated by the numerical aperture (NA) of the illumination and collection optics. In biological tissues, the resolution is strongly affected by scattering, which limits the penetration depth to a few tenths of microns. Here we exploit the properties of speckle patterns embedded into a strongly scattering matrix to illuminate the sample at high spatial frequency content. Combining illumination performed through a Digital Micromirror Device(DMD) and a custom deconvolution algorithm, we obtain an increase in the transverse spatial resolution by a factor of 2.5 with respect to the natural diffraction limit.
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Marco Leonetti, Alfonso Grimaldi, Silvia Ghirga, Giancarlo Ruocco, and Giuseppe Antonacci "DMD-based scattering assisted imaging with unknown speckle patterns (Conference Presentation)", Proc. SPIE 11294, Emerging Digital Micromirror Device Based Systems and Applications XII, 1129404 (10 March 2020); https://doi.org/10.1117/12.2537322
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KEYWORDS
Speckle pattern
Light scattering
Scattering
Electromagnetic scattering
Point spread functions
Speckle imaging
Biomedical optics
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