1. An imaging system, comprising: a thermal imaging device comprising a thermal imaging module configured to capture a thermal image of an object; a visible light (VL) imaging device comprising a VL imaging module configured to capture a VL image of the object; and one or more processors communicatively coupled to the thermal imaging module and the VL imaging module, the one or more processors configured to: determine a plurality of thermal image reference points from the thermal image, determine a plurality of VL image reference points from the VL image, determine a geometric transform based on the plurality of thermal image reference points and the plurality of VL image reference points, such that the geometric transform at least approximately maps the plurality of thermal image reference points to the plurality of VL image reference points or at least approximately maps the plurality of VL image reference points to the plurality of thermal image reference points, and apply the geometric transform to the thermal image or the VL image to align the thermal image and the VL image.