Dual Band Thermal Videography: Separating Time-Varying Reflection and Emission Near Ambient Conditions

ArXi:2509.11334v2 Announce Type: replace Long-wave infrared radiation captured by a thermal camera includes (a) emission from an object governed by its temperature and emissivity, and (b) reflected radiation from the surrounding environment. Separating these components is a long-standing challenge in thermography. Even when using multiple bands, the problem is under-determined without priors on emissivity. This difficulty is amplified in near ambient conditions, where emitted and reflected signals are of comparable magnitude.