Recovery of hyperspectral data from image
AssigneeB.G. Negev Technologies and Applications Ltd., At Ben-Gurion University
InventorsOhad BEN-SHAHAR, Boaz ARAD
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Abstract
A method for approximating spectral data, the method comprising using at least one hardware processor for: providing a digital image comprising data in a first set of spectral bands; providing a dictionary comprising (a) signatures in a second set of spectral bands and (b) values in said first set of spectral bands, wherein said values correspond to the signatures, and wherein said first and second sets of spectral bands are different; and approximating, based on the dictionary, data in said second set of spectral bands of said digital image.
Claims28
A method for approximating spectral data, the method comprising using at least one hardware processor for:
- providing a digital image comprising data in a first set of spectral bands;
- providing an overcomplete dictionary comprising (a) signatures in a second set of spectral bands and (b) values in said first set of spectral bands, wherein said values correspond to the signatures, and wherein said signatures sparsely represent signals associated with said second set of spectral bands;
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- approximating, based on the overcomplete dictionary, data in said second set of spectral bands for each pixel in said digital image.
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An apparatus comprising:
- an image sensor configured to capture a digital image in a first set of spectral bands;
- a non-transient memory having stored thereon an overcomplete dictionary comprising (a) signatures in a second set of spectral bands and (b) values in said first set of spectral bands, wherein said values correspond to the signatures, and wherein said signatures sparsely represent signals associated with said second set of spectral bands;
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- at least one hardware processor configured to approximate, based on the overcomplete dictionary, data in said second set of spectral bands for each pixel in said digital image.
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An apparatus comprising:
- a non-transient memory having stored thereon an overcomplete dictionary comprising signatures in a first set of spectral bands, wherein said signatures sparsely represent said first set of spectral bands, and
- at least one hardware processor configured to derive, for each of said signatures, a corresponding value in a second set of spectral bands, based, at least in part, on applying, to said signatures, spectral transformation functions associated with said second set of spectral bands.
Dependencies are inferred from the claim text.