US 2015/0032402 A1 · EXTRACTION OF SPECTRAL INFORMATION

Abstract

A spectral distribution of incident light can be determined to increase collected spectral information. The spectral distribution of the incident light can be represented as a sum of spectral components after the incident light passes through a spectrum selective element. A signal at each color pixel of the spectrum selective element can be determined using, in part, the sum of the spectral components, where the spectral components are represented by a set of preliminary values. An error associated with the signal at each color pixel of the spectrum selective element is calculated. One or more perturbations are performed on each of the preliminary values and the error associated with the signal at each color pixel of the spectrum selective element is recalculated. The perturbations on each of the preliminary values is repeated until the error stabilizes within a predetermined range in order to assign the stabilized preliminary values as the spectral components in the incident light.

Claims20

Dependent claims

A method for determining a spectral distribution of incident light, the method comprising:

representing the spectral distribution of the incident light as a sum of spectral components after the incident light passes through a spectrum selective element;
determining a signal at each color pixel of the spectrum selective element using, in part, the sum of the spectral components, wherein the spectral components are represented by a set of preliminary values;
calculating an error associated with the signal at each color pixel of the spectrum selective element;
and
performing one or more perturbations on each of the preliminary values and recalculating the error associated with the signal at each color pixel of the spectrum selective element, wherein the perturbations on each of the preliminary values are repeated until the error stabilizes within a predetermined range in order to assign the stabilized preliminary values to the spectral components in the incident light.

2 more elements

A method for determining a spectral distribution of incident light, the method comprising:

representing the spectral distribution of the incident light as a sum of known spectral components after the incident light passes through a spectrum selective element, the known spectral components being associated with unknown weighting factors;
determining a signal at each color pixel of the spectrum selective element using, in part, the sum of known spectral components, wherein the unknown weighting factors are represented by a set of preliminary weighting values;
calculating an error associated with the signal at each color pixel of the spectrum selective element;
and
performing one or more perturbations on each of the preliminary weighting values and recalculating the error associated with the signal at each color pixel of the spectrum selective element, wherein the perturbations on each of the preliminary weighting values are repeated until the error stabilizes within a predetermined range in order to assign the stabilized preliminary weighting values to the spectral components in the incident light.

2 more elements

Dependencies are inferred from the claim text.

Extraction of spectral information

Life of this patent

Extraction of spectral information

Life of this patent

Abstract

Claims20