Perspective distortion tolerances and skull-face registration in craniofacial superimposition: an analytical review.

"Declarations Ethics approvalThis work is exempt from ethics approval. The work concerns photographs of the second author taken with full consent and the use of a pre-existing CT scan of the second author, again with full consent. Consent to participateThe second author consents to the publication of various images of his face and skull in this work. Competing interestsThe authors declare no competing interests. DisclaimerThe views and opinions expressed herein are entirely those of the authors. They are not to be construed as official views of any institutions, editorial boards, or governing boards to which the authors may be affiliated. Competing interests The authors declare no competing interests."

"Funding Open Access funding enabled and organized by CAUL and its Member Institutions Open Access funding enabled and organized by CAUL and its Member Institutions. The authors did not receive funding support from any organization to specifically undertake the submitted work. The authors did not receive funding support from any organization to specifically undertake the submitted work."