FLIR's HSM is based upon an image subtraction video processing technique that is said to enhance the thermal sensitivity of the camera. The HSM feature subtracts a percentage of individual pixel signals from frames in the video stream from the subsequent frames, thus enhancing the differences between frames, which make leaks stand out more clearly in the resulting images. FLIR claims that even the smallest of gas leaks can be spotted using HSM with a FLIR GF Series optical gas imaging (OGI) camera.
FLIR GF Series OGI cameras are said to offer quick, non-contact measurement of gas leaks in real time. The GF Series OGI cameras present visual information, making the leak detection process more intuitive. Optical gas imaging cameras can also be used in hard-to-access locations, since they can detect small leaks from a distance. Unlike restricted point measurement provided by 'gas sniffers' a GF Series OGI camera allows engineers to detect gas leakage anywhere within the field of view of the camera, speeding the process of gas leak inspection.
