Abstract: Systems and methods for determining and tracking a positioning of a subject and displaying an image of a model of a subject are disclosed. A system includes a plurality of thermal markers, one or more thermal imaging devices arranged to capture baseline and updated infrared images of the surface and the thermal markers, and a computing device communicatively coupled to the thermal imaging devices. A first thermal marker is arranged at a first location relative to the surface. The computing device receives the baseline and updated infrared images and determines a corrective movement for at least one of the subject and the surface to align the thermal markers in the updated infrared image with the thermal markers in the baseline infrared image based on a location of the thermal markers in the baseline infrared image and a location of the thermal markers in the updated infrared image.