1. A method for cross-modal face matching using polarimetric thermal image data, comprising: receiving a plurality of polarimetric thermal images of a face; extracting features of the face from each of the plurality of images to generate a plurality of feature vectors for each of the plurality of images; compositing the feature vectors for each of the plurality of images together to form composite feature vectors; and matching the composite feature vectors with other feature vectors in order to determine whether the face matches a face represented by the other feature vectors.