Exploring 3D Modelling of Thermal Images to  Analyse Decomposition Dynamics

This research project sits within the field of forensic taphonomy, which studies what happens to a body between death and discovery. It investigates whether thermal imaging combined with photogrammetry—a 3D modelling technique—can offer new insights into the decomposition process, particularly in the early stages. The central aim is to determine whether 3D thermal models can reveal patterns of heat distribution that might help estimate the postmortem interval (PMI), or time since death.

Using a FLIR CX5 infrared thermal camera, Dr Paige Tynan will monitor up to three ethically sourced pig carcasses, commonly used as human analogues in forensic studies. Over a period of up to four months, thermal images will be captured regularly and processed using Agisoft Metashape to create detailed 3D models. These reconstructions will allow researchers to visualise and analyse how heat patterns shift during decomposition.

This is a validation study, assessing whether the integration of thermal imaging into 3D modelling can become a reliable forensic tool. If successful, the method could provide an objective and non-invasive way to estimate time since death—critical in forensic casework for identifying victims and suspects.

Beyond its immediate forensic applications, the study also lays the groundwork for further research into how emerging imaging technologies can enhance our understanding of decomposition dynamics. It may eventually contribute to developing standard protocols for thermal-based PMI estimation, supporting investigations and offering closure to families of the deceased.