Spectral object detection
AssigneeParsons Corporation
InventorsMatthew B. Campbell, Andrew J. Dally
Life of this patent
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Abstract
A multispectral material detection system captures spectral data and compares select spectral bands to reflectance spectra of a plurality of materials. The system identifies distinguishing features in reflectance spectra of a plurality of materials and in a plurality of spectral channels identifying distinguishing structural aspects of each material with respect to the background environments. Upon an observed spectral reflectance being proximate to one or more known spectra characteristics, the object is associated with a material of interest.
Claims17
A spectral detection system, comprising:
- a multispectral image collection system wherein the multispectral image collection system uses a shared optic configured to form a single image having a plurality of pixels;
- a reflectance spectra datafile including a plurality of reflectance spectra characteristics of a plurality of materials of interest, each in a plurality of background environments, wherein the plurality of reflectance spectra characteristics account for atmospheric considerations;
- a machine capable of executing instructions embodied as software;
- and
- a plurality of software portions resident on a non-transitory storage media, wherein
- one of said software portions is configured to capture spectral data of an object in a background environment in two or more selectable spectral bands and to identify spectra characteristics including absorption, reflectance and fluorescence for each pixel in the single image and wherein each selectable band is of a selectable bandwidth, and
- one of said software portions is configured to compare spectral data of the object in the two or more selectable spectral bands with reflectance spectra characteristics of the plurality of material of interests from a reflectance spectra datafile.
A method for locating an object in a background environment based on a material of interest, comprising:
- capturing by a multispectral image collection system using a shared optic to form a single image having a plurality of pixels, spectral data of the object in the background environment in two or more selectable spectral bands, wherein each selectable band is of a selectable bandwidth;
- retrieving, from a reflectance spectra datafile, reflectance spectra characteristics of a plurality of materials of interest in the background environment wherein the each reflectance spectra characteristic accounts for atmospheric considerations;
- identifying spectra characteristics including absorption, reflectance and fluorescence for each pixel in the single image;
- comparing captured spectral data in the two or more selectable spectral bands to the reflectance spectra characteristics of the plurality of material of interests;
- and
- responsive to the captured spectral data being proximate to one or more of the reflectance spectra characteristics of the plurality of material of interests, associating the object with a material of interest.
A non-transitory computer-readable storage medium tangibly embodying a program of instructions executable by a machine wherein said program of instruction comprises a plurality of program codes for locating an object in a background environment;
- said program of instruction comprising:
- program code for capturing by a multispectral image collection system using a shared optic to form a single image having a plurality of pixels, spectral data of the object in the background environment in two or more selectable spectral bands, wherein each selectable band is of a selectable bandwidth;
- program code for retrieving, from a reflectance spectra datafile, reflectance spectra characteristics of a plurality of materials of interest in the background environment wherein the each reflectance spectra characteristic accounts for atmospheric considerations;
- program code for identifying spectra characteristics including absorption, reflectance and fluorescence for each pixel in the single image;
- program code for comparing captured spectral data in the two or more selectable spectral bands to the reflectance spectra characteristics of the plurality of material of interests;
- and
- program code responsive to the captured spectral data being proximate to one or more of the reflectance spectra characteristics of the plurality of material of interests, for associating the object with a material of interest.
Dependencies are inferred from the claim text.