TSF

Thermal Spread Functions (TSF): Physics-guided Material Classification

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Thermal Spread Function (TSF)

• Heating-Cooling creates unique spatio-temporal curves that are unique to each material

Finite Differences Approach for the Inverse Problem

• We extract the diffusivity and absorption parameters from the TSFs. These form the basis for the classification

Classification based on recovered thermal properties

• We use the extracted thermal properties to train an MLP-based classifier for identifying a new material

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Aniket Dashpute^1,3, Vishwanath Saragadam³, Emma Alexander², Florian Willomitzer⁴, Aggelos Katsaggelos¹, Ashok Veeraraghavan³, Oliver Cossairt^1,2

¹Electrical and Computer Engineering, ²Computer Science, Northwestern University,

³Electrical and Computer Engineering, Rice University,

⁴Wyant College of Optical Sciences, University of Arizona

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