A Novel Compensation Method for Infrared Temperature Measurement Using Infrared Vision and Visible Light Vision Under Water Mist Interference

Infrared thermography (IRT), a promising non-contact temperature measurement technology, has been widely used in many domains. However, the interference factors in measurement scenarios can influence the infrared temperature measurement accuracy. Aiming at the interference of dynamic water mist, a new infrared temperature compensation method combining infrared vision with visible light vision is innovatively proposed for the first time to overcome the measurement errors caused by water mist. Firstly, a temperature measurement system is designed by combining infrared vision and visible light vision. Secondly, based on infrared temperature measurement principle, a temperature compensation model is built to reduce the influence of water mist. Then, to determine the water mist transmittance in the compensation model, a relative water mist concentration estimation model is built by using visible image, and the online estimation of water mist transmittance is realized based on the relative water mist concentration. Experimental results of blackbody furnace and metal cup show that the proposed temperature compensation method is effective in overcoming the interference of dynamic water mist and has the potential for practical application.