Thermal / Visible Autonomous Stereo Visio System Calibration Methodology for Non-controlled Environments

This paper presents a fast and low cost methodology for thermal / visible stereo vision system calibration with high reliability for non-controlled external environments. The proposed methodology uses a non-powered calibration rig to map the coordinates, field of view and magnification distortions from visible and thermal vision and a self-calibration analysis procedure to estimate metrological uncertainty of imaging correspondence. Tests were conducted to determine the effectiveness of the developed calibration rig.