METHODS FOR GAS DETECTION USING STATIONARY HYPERSPECTRAL IMAGING SENSORS
First Claim
1. A method, comprising:
- producing a first hyperspectral imaging (HSI) data cube of a location at a first time using data from a HSI sensor;
producing a second HSI data cube of the same location at a second time using data from the HSI sensor;
subtracting on a pixel-by-pixel basis the second HSI data cube from the first HSI data cube to produce a raw difference cube;
calibrating the raw difference cube to produce a calibrated raw difference cube;
selecting at least one desired spectral band based on a gas of interest;
producing a detection image based on the at least one selected spectral band and the calibrated raw difference cube;
examining the detection image to determine presence of the gas of interest; and
outputting a result of the examination.
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Accused Products
Abstract
According to one embodiment, a method comprises producing a first hyperspectral imaging (HSI) data cube of a location at a first time using data from a HSI sensor; producing a second HSI data cube of the same location at a second time using data from the HSI sensor; subtracting on a pixel-by-pixel basis the second HSI data cube from the first HSI data cube to produce a raw difference cube; calibrating the raw difference cube to produce a calibrated raw difference cube; selecting at least one desired spectral band based on a gas of interest; producing a detection image based on the at least one selected spectral band and the calibrated raw difference cube; examining the detection image to determine presence of the gas of interest; and outputting a result of the examination. Other methods, systems, and computer program products for detecting the presence of a gas are also described.
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Citations
24 Claims
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1. A method, comprising:
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producing a first hyperspectral imaging (HSI) data cube of a location at a first time using data from a HSI sensor; producing a second HSI data cube of the same location at a second time using data from the HSI sensor; subtracting on a pixel-by-pixel basis the second HSI data cube from the first HSI data cube to produce a raw difference cube; calibrating the raw difference cube to produce a calibrated raw difference cube; selecting at least one desired spectral band based on a gas of interest; producing a detection image based on the at least one selected spectral band and the calibrated raw difference cube; examining the detection image to determine presence of the gas of interest; and outputting a result of the examination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer program product for detecting the presence of a gas of interest, the computer program product comprising:
a computer readable memory having computer readable program code stored therein, the computer readable program code comprising; computer readable program code for producing a first hyperspectral imaging (HSI) data cube of a location at a first time using data from a HSI sensor; computer readable program code for producing a second HSI data cube of the same location at a second time using data from the HSI sensor; computer readable program code for subtracting on a pixel-by-pixel basis the second HSI data cube from the first HSI data cube to produce a raw difference cube; computer readable program code for calibrating the raw difference cube to produce a calibrated raw difference cube; computer readable program code for selecting at least one desired spectral band based on a gas of interest; computer readable program code for producing a detection image based on the at least one selected spectral band and the calibrated raw difference cube; computer readable program code for examining the detection image to determine presence of the gas of interest; and computer readable program code for outputting a result of the examination. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system, comprising:
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a receiving mechanism for receiving a first hyperspectral imaging (HSI) data cube of a location at a first time and a second HSI data cube of the same location at a second time created using data from a HSI sensor; a processor; and a memory operatively coupled to the processor; wherein the processor comprises; logic for subtracting on a pixel-by-pixel basis the second HSI data cube from the first HSI data cube to produce a raw difference cube; logic for calibrating the raw difference cube to produce a calibrated raw difference cube; logic for selecting at least one desired spectral band based on a gas of interest; logic for producing a detection image based on the at least one selected spectral band and the calibrated raw difference cube; logic for examining the detection image to determine presence of the gas of interest; and logic for outputting a result of the examination. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification