Patent ID: 7385705

Claim:
A computer readable medium comprising computer-executable steps for generating a multispectral or source using an optical system having an adjustable, wavenumber-dependent point spread function, the computer-executable process steps including: collecting a plurality of panchromatic images of the image source from the optical system, each panchromatic image corresponding to a selected one of a predetermined set of point spread functions and being comprised of a measured intensity data set corresponding to a range of wavelengths; transforming the collected plurality of panchromatic images from an image domain into a spatial frequency domain by using a Fourier transform; solving a matrix equation at each one of a predetermined set of spatial frequencies, in which a vector of the transformed panchromatic images is equal to the product of a predetermined matrix of discrete weighting coefficients and a vector representing a wavenumber content of the image source at each spatial frequency, resulting in a determined wavenumber content of the image source in the spatial frequency domain; and inverse transforming the determined wavenumber content of the image source from the spatial frequency domain into the image domain, resulting in the multispectral or hyperspectral image of the image source.