Patent ID: 9464984
Filing Date: 2016-10-11
CPC Classification: G01J,G01N,G01S,G06T,H01L,H04N

Claim Text:
1. A method for detecting a target gas in a target scene comprising: capturing a first image of the target scene using a detector element sensitive over a range of wavelengths of light including a first wavelength, the first wavelength being such that the target gas does not significantly absorb light of the first wavelength; illuminating a first portion of the target scene with light of the first wavelength; capturing a second image of the target scene, the second image being representative of the target scene illuminated by light of the first wavelength; comparing corresponding portions of the first image and the second image; generating a gas detection image in which, for a given one or more pixels in the corresponding portions, displaying the gas detection image in which such pixels considered to be inoperable gas detection pixels are presented in a distinguishing way from such pixels considered to be operable gas detection pixels.