Patent ID: 8659656

Claim:
A method of unmixing hyperspectral image data, the method comprising: receiving mixed image data of one or more pixels, wherein the mixed image data is generated by an imaging device that captures hyperspectral data, and wherein the mixed image data includes sensed spectral band intensities of materials in an area represented by a particular pixel; converting the mixed image data from first analog domain signals into pulse domain signals in a pulse domain, wherein the pulse domain is distinct from a digital domain; generating a solution to a mixing equation in the pulse domain to identify abundances of one or more of the materials based on the sensed spectral band intensities by comparing the sensed spectral band intensities to reference spectral band intensities of a set of considered materials, wherein the mixing equation indicates a mathematical relationship between the sensed spectral band intensities and the reference spectral band intensities; and converting the solution from the pulse domain into an analog domain as second analog domain signals.