Abstract: A method and a system to quantify gas in a thermal imaging device, said method comprising obtaining a gas-absorption-path-length image as a scene difference infrared image based on a gas infrared image and a scene background infrared image substantially depicting the same scene and generating a quantified scene difference infrared image based on said scene difference infrared image and a predefined gas-quantifying relation.

Abstract: Automated localization of a point source of a visualized gas leak, by searching in a corner response function crƒ(x*,y*,?), calculated based on a number of frames of the gas leak, for maximum values in the (x*,y*) variables that are stable over the time variable ?. Considering a point (x*,y*) as the point source if the corner response function crƒ(x*,y*,?) has a maximum value in the point (x*,y*) and the point (x*,y*) is temporally stable.

Abstract: Automated localization of a point source of a visualized gas leak, by searching in a corner response function crf(x*,y*,?), calculated based on a number of frames of said gas leak, for maximum values in the (x*,y*) variables that are stable over the time variable ?. Considering a point (x*,y*) as said point source if said corner response function crf(x*,y*,?) has a maximum value in said point (x*,y*) and said point (x*,y*) is temporally stable.

Abstract: A method for quantitative imaging of gas emissions utilizing optical techniques combining gas correlation techniques with thermal background radiation or gas self-emission radiation is presented. A simultaneous recording of images with and without filtering through a gas-filled cell is utilized for the identification of a selected gas. A new calibration method provides the display of the integrated gas concentration spatially resolved in the generated final image. The procedure includes methods for a correct subtraction of the zero level, consisting of self-radiation from the dual-image camera device including the as correlation cell and electronic offset, and for the calculation of the specific absorption as a function of the difference temperature between the background and the gas emission.

Abstract: A method for quantitative imaging of gas emissions utilizing optical techniques combining gas correlation techniques with thermal background radiation or as self-emission radiation is presented. A simultaneous recording of images with and without filtering through a gas-filled cell is utilized for the identification of a selected gas A new calibration method provides the display of the integrated gas concentration spatially resolved in the generated final image. The procedure includes methods for a correct subtraction of the zero level, consisting of self-radiation from the dual-image camera device including the as correlation cell,, and electronic offset, and for the calculation of the specific absorption as a function of the difference temperature between the background and the gas emission.