Patent ID: 9031336
Filing Date: 2015-05-12
Classification: G06T

Abstract:
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 to retain: a zero-frequency Fourier coefficient magnitude to encode spectral intensity at each of said locations, a low frequency subset of Fourier coefficient phases to encode Doppler shift at each of said locations, and a low frequency subset of Fourier coefficient magnitudes to encode spectral line widths 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.