System and method for polarization imaging
AssigneeRamot at Tel-Aviv University Ltd.
InventorsRaja Giryes, Shay Avraham Elmalem
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Abstract
A system for polarization imaging comprises an optical diffuser characterized by a point spread function (PSF), an image sensor, a spatially multiplexed polarization filter between the optical diffuser and the image sensor, and an image processor. The image processor receives signals from the image sensor and reconstructs, based on the PSF, a separate image for each polarization direction formed on the polarization filter.
Claims19
A system for polarization imaging, comprising an optical diffuser characterized by a point spread function (PSF), an image sensor, a spatially multiplexed polarization filter between said optical diffuser and said image sensor, and an image processor having a circuit configured to receive signals from said image sensor and to reconstruct based on said PSF a separate image for each polarization direction formed on said polarization filter;
- wherein said image sensor comprises a plurality of wavelength channels, and wherein said circuit of said image processor is configured to reconstruct each separate image using all wavelength channels.
A method of polarization imaging, comprising,
- by an optical diffuser, diffusing a light beam arriving from a scene according to a point spread function (PSF) to provide a diffused light beam,
- by a spatially multiplexed polarization filter, applying spatially multiplexed polarization filtering to said diffused light beam to provide a filtered diffused light beam,
- by an image sensor, generating electrical signals responsively to said filtered diffused light beam, wherein said polarization filter is between said diffuser and said image sensor, and
- by an image processor having a circuit, processing said electrical signals to reconstruct, based on said PSF, a separate image for each polarization direction of said multiplexed polarization filtering;
- wherein said image sensor comprises a plurality of wavelength channels, wherein said generating electrical signals comprises generating electrical signals over said plurality of wavelength channels, and wherein said processing comprises reconstructing each separate image using all wavelength channels.
Dependencies are inferred from the claim text.