Identification of Criminal and Victim by Using Low Resolution Androgenic Hair Patterns

Criminals and victims verification is always an important task in police investigation and forensic evaluation. Blood samples, Finger Marks, DNA, dental records, tattoos, face images and face sketches are used constantly by enforcement laws agents in the world. But they cannot handle the cases, where only images describing crime scene samples are available nowadays verifying criminals and victims in images (e.g., child pornography and masked gunmen) can be a difficult work, especially when even their faces or any mark are observable. The Skin mark patterns and blood vessel patterns are just proposed to address this problem. However, they are invisible in low-resolution images and dense androgenic hairs can cover them completely. Results of medical research have implied that androgenic hair patterns are a stable biometric trait and have ability to overcome the problems of skin mark patterns and blood vessel patterns. To the best of our knowledge, no one has worked before on androgenic hair patterns for criminal and victim identification. This paper aims to study performance of matching of androgenic hair patterns in low resolution images.