A Flame Localization Method Combing Visible-Light and Near-Infrared Cameras

As common natural disasters, fire incidents seriously threaten human life and property. Flame target localization is a key step to enabling timely detection and effective control of the fire incident. In this study, a novel approach that combines visible-light and near-infrared cameras in a heterogeneous binocular camera system is proposed. High-precision localization of early small-scale fire targets is achieved through calibration of the heterogeneous binocular camera, stereo rectification, heterogeneous disparity matching, and depth computation. Experimental tests were conducted within a range of 1–5 meters, validating the effectiveness of the proposed algorithm.