Thermal imaging method to detect subsurface objects

Abstract From the Canadian patent

A thermal imaging method to detect heat flows from naturally-heated subsurface objects. The method uniquely combines precise, emissivity-corrected temperature maps thermal inertia maps, temperature simulations and automatic target recognition , to display clear clutter-free, three-dimensional images of contained hollow objects or structures, at depths to 20 times their diameter. Temperature scans are corrected using two different infrared bands. Co-registered object-site temperature scans image daily and seasonal temperature-spread differences which vary inversely as the , object's and surrounding host material's thermal inertias. Thermal inertial (resistance to temperature change) is …