Patent ID: 9471969
Filing Date: 2016-10-18
CPC Classification: G01M,G01N,G06T,G08B,H04N

Claim Text:
1. A method for detecting at least one chemical species using a detection system including multiple electromagnetic radiation detectors, the method comprising: obtaining a first image from a first electromagnetic radiation detector configured to detect emission or absorption of the at least one chemical species released into an environment, the image including a first plurality of pixels, each pixel having an associated intensity value; obtaining a second image from a second electromagnetic radiation detector configured to provide a reference background, the image including a second plurality of pixels, each pixel having an associated intensity value; adjusting one or more intensity values of the first plurality of pixels based on one or more intensity value parameters of the first image; adjusting one or more intensity values of the second plurality of pixels based on the one or more intensity value parameters of the first image; obtaining subsequent images from the first electromagnetic radiation detector and the second electromagnetic radiation detector; adjusting pixels of the subsequent images from the first electromagnetic radiation detector based on the adjusted intensity values of the first plurality of pixels; adjusting pixels of the subsequent images from the second electromagnetic radiation detector based on the adjusted intensity values of the second plurality of pixels; and determining the presence or absence of a chemical species based, at least in part, on a comparison of the adjusted images from the first electromagnetic radiation detector and the second electromagnetic radiation detector, wherein the first plurality of pixels of the first image and the second plurality of pixels of the second image are substantially temporally and spatially aligned.