Systems And Methods for Hybrid Compression Of Spectral Image Data
First Claim
1. A method for generating a compressed spectral image, said method comprising:
- receiving spectral image data, said spectral image data comprising a plurality of spectral intensity values, each of said spectral intensity values associated with a first spatial dimension (x-dimension), a second spatial dimension (y-dimension) and a wavelength dimension (λ
-dimension);
applying a window to said spectral image data along said λ
-dimension, said window configured to select a subset of said spectral image data corresponding to a range of wavelengths;
performing a Fourier transform on said windowed spectral image data along said λ
-dimension, said Fourier transform performed at a plurality of locations along said x-dimension and said y-dimension, said Fourier transform configured to generate a plurality of Fourier coefficients associated with each of said locations;
filtering said Fourier transformed data, said filtering comprising retaining a subset of said Fourier coefficients at each of said locations; and
performing wavelet compression of said filtered data along said x-dimension and along said y-dimension to generate said compressed spectral image.
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Abstract
A method and system for generating a compressed spectral image is provided. Spectral image data including a plurality of spectral intensity values is received. The spectral intensity values are associated with a first spatial dimension (x-dimension), a second spatial dimension (y-dimension) and a wavelength dimension (λ-dimension). A window is applied to the spectral image data along the λ-dimension, to select a subset of the spectral image data corresponding to a range of wavelengths. A Fourier transform is performed on the windowed spectral image data along the λ-dimension, at locations along the x-dimension and y-dimension, to generate Fourier coefficients associated with each of the locations. The Fourier transformed data is filtered by retaining a subset of the Fourier coefficients at each of the locations. Wavelet compression is performed on the filtered data along the x-dimension and the y-dimension to generate the compressed spectral image.
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Citations
30 Claims
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1. A method for generating a compressed spectral image, said method comprising:
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receiving spectral image data, said spectral image data comprising a plurality of spectral intensity values, each of said spectral intensity values associated with a first spatial dimension (x-dimension), a second spatial dimension (y-dimension) and a wavelength dimension (λ
-dimension);applying a window to said spectral image data along said λ
-dimension, said window configured to select a subset of said spectral image data corresponding to a range of wavelengths;performing a Fourier transform on said windowed spectral image data along said λ
-dimension, said Fourier transform performed at a plurality of locations along said x-dimension and said y-dimension, said Fourier transform configured to generate a plurality of Fourier coefficients associated with each of said locations;filtering said Fourier transformed data, said filtering comprising retaining a subset of said Fourier coefficients at each of said locations; and performing wavelet compression of said filtered data along said x-dimension and along said y-dimension to generate said compressed spectral image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for generating a compressed spectral image, said system comprising:
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an image compression module configured to receive spectral image data, said spectral image data comprising a plurality of spectral intensity values, each of said spectral intensity values associated with a first spatial dimension (x-dimension), a second spatial dimension (y-dimension) and a wavelength dimension (λ
-dimension);a windowing module configured to apply a window to said spectral image data along said λ
-dimension, said window configured to select a subset of said spectral image data corresponding to a range of wavelengths;a Fourier transform module configured to perform a Fourier transform on said windowed spectral image data along said λ
-dimension, said Fourier transform performed at a plurality of locations along said x-dimension and said y-dimension to generate a plurality of Fourier coefficients associated with each of said locations;a filter module configured to filter said Fourier transformed data, said filtering comprising retaining a subset of said Fourier coefficients at each of said locations; and a wavelet compression module configured to perform wavelet compression of said filtered data along said x-dimension and along said y-dimension to generate said compressed spectral image. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An article comprising a non-transitory storage medium having stored thereon instructions that when executed by a machine result in the following operations:
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receiving spectral image data, said spectral image data comprising a plurality of spectral intensity values, each of said spectral intensity values associated with a first spatial dimension (x-dimension), a second spatial dimension (y-dimension) and a wavelength dimension (λ
-dimension);applying a window to said spectral image data along said λ
-dimension, said window configured to select a subset of said spectral image data corresponding to a range of wavelengths;performing a Fourier transform on said windowed spectral image data along said λ
-dimension, said Fourier transform performed at a plurality of locations along said x-dimension and said y-dimension, said Fourier transform configured to generate a plurality of Fourier coefficients associated with each of said locations;filtering said Fourier transformed data, said filtering comprising retaining a subset of said Fourier coefficients at each of said locations; and performing wavelet compression of said filtered data along said x-dimension and along said y-dimension to generate said compressed spectral image. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification