Method and device for imaging of lensless hyperspectral image
AssigneeKorea Advanced Institute of Science and Technology
InventorsMin Hyuk Kim, Daniel Jeon
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Abstract
Disclosed are a hyperspectral imaging method and an apparatus thereof. A method of reconstructing a hyperspectral image includes receiving an image photographed through a diffractive optical element and reconstructing a hyperspectral image of the received image based on the received image and information about a point spread function for each wavelength of the diffractive optical element. The diffractive optical element may generate an anisotropic shape of the point spread function that varies with a spectrum.
Claims18
A method of reconstructing a hyperspectral image, the method comprising:
- receiving an image photographed through only a single diffractive optical element attached to a single bare image sensor, wherein an imaging lens includes the single diffractive optical element;
- and
- reconstructing a hyperspectral image of the received image based on the received image and information about a point spread function for each wavelength of the diffractive optical element,
- wherein the single diffractive optical element has a diffractive rotation property that spectrally rotates a shape of the point spread function.
An apparatus for reconstructing a hyperspectral image, the apparatus comprising:
- a receiving unit configured to receive an image photographed through only a single diffractive optical element attached to a single bare image sensor, wherein an imaging lens includes the single diffractive optical element;
- and
- a reconstructing unit configured to reconstruct a hyperspectral image of the received image based on the received image and information about a point spread function for each wavelength of the single diffractive optical element,
- wherein the single diffractive optical element has a diffractive rotation property that spectrally rotates a shape of the point spread function.
A system for reconstructing a hyperspectral image, the system comprising:
- a single diffractive optical element attached to a single bare image sensor, wherein an imaging lens includes the single diffractive optical element;
- and
- a camera apparatus configured to take an image through only the single diffractive optical element, and reconstruct a hyperspectral image of the photographed image based on a point spread function information for each wavelength of the single diffractive optical element and the photographed image,
- wherein the single diffractive optical element has a diffractive rotation property that spectrally rotates a shape of the point spread function.
Dependencies are inferred from the claim text.