Research on a temperature measurement method based on three primary colors of high-speed camera

This article focuses on the temperature field measurement of warhead damage, and uses color high-speed camera to output the grayscale values of R, G, and B primary colors and their relationship with temperature, achieving non-contact measurement of explosion temperature field. A testing system was constructed based on the characteristics of the explosion fireball, and temperature and RGB values were calibrated using a blackbody furnace. The effects of exposure time and filter were analyzed, and the explosion fireball images were denoised, threshold segmented, and connected domain analyzed. Data processing software was designed and implemented based on MATLAB, and the explosion fireball sequence images were imported to analyze the two-dimensional distribution and temperature change characteristics of the temperature field.