ミラー駆動型赤外アクティブカメラを用いたパノラマサーマル撮影

抄録

Fire and explosion accidents with equipment troubles directly lead to long-term shutdowns and labor accidents related to human lives in ironworks. Panoramic thermal monitoring that can syn-thesize multiple thermal images at different viewpoints is strongly demanded for wide-area infra-structures such as material yards. In this study, we develop a mirror-drive pan-tilt telephoto infra-red camera that enables quick viewpoint switching to different directions without moving its heavy camera body and realize to capture a panoramic thermal image of 8320×4320 pixels in the view angle of 93×46 degrees by stitching 117 thermal images at intervals of 24 s in the fastest case. We demonstrate its effectiveness by verifying panoramic thermal images for material yards in ironworks and superimpose the panoramic thermal images on their 3D point cloud data toward digital-twin-based thermal monitoring.