Digital filter for turbulence reduction and gas detection in thermal images

Abstract

Various techniques are provided for removing turbulent gases from thermal images of high temperature scenes and for detecting gas leaks. In one example, a method includes receiving a plurality of thermal images captured of a scene comprising a furnace tube and combustion gas exhibiting higher temperatures than the furnace tube. Each thermal image comprises a plurality of pixels each having an associated pixel value. The method also includes applying a digital filter to the thermal images to generate a processed thermal image. Each pixel of the processed thermal image has an associated minimum pixel value determined from corresponding pixels of the thermal images to remove the higher temperature combustion gas from the processed thermal image. Additional methods and systems are also provided.

Dependencies are inferred from the claim text.