Background radiance estimation and gas concentration-length quantification method for optical gas imaging camera

A gas concentration-length quantification system, comprising:

• a camera;
• a processing unit connected to the camera,
• wherein the processor performs:
• reading a first image including a gas plume from the camera;
• identifying and segmenting pixels corresponding to the gas plume in the first image;
• creating a mask image corresponding to the first image wherein only pixels of the mask image corresponding to the gas plume in the first image have non-zero values;
• generating a background image corresponding to the first image using an image inpainting algorithm with the first image and the mask image as inputs;
• calculating a gas concentration-length for each pixel corresponding to the gas plume in the first image, based on the first image and the background image data;
• and
• triggering an alert when the gas concentration-length for at least one pixel exceeds a threshold level.

A non-transitory computer readable medium (CRM) storing computer readable program code embodied therein that:

• reads a first image including a gas plume;
• identifies and segments pixels corresponding to the gas plume in the first image;
• creates a mask image corresponding to the first image wherein only pixels of the mask image corresponding to the gas plume in the first image have non-zero values;
• generates a background image corresponding to the first image using an image inpainting algorithm with the first image and the mask image as inputs;
• calculates a gas concentration-length for each pixel corresponding to the gas plume in the first image, based on the first image and the background image data;
• and
• triggers an alert when the gas concentration-length for at least one pixel exceeds a threshold level.