How Facial Similarity Analysis Could Support Cold Case Investigations
Forensic investigations often rely on strong evidence such as DNA, fingerprints, CCTV and digital records. But in cold cases, that evidence is not always available. Records may be incomplete, samples may be degraded, and links between cases can be difficult to prove.
New research from Murdoch University is looking at a different type of forensic intelligence. The tool, called Face Similarity Linkage, compares facial features between victims to help investigators identify possible patterns in unsolved cases.
This is not the same as facial recognition. It is not used to identify a suspect. Instead, it looks at victim similarities that may help police explore whether separate cases could be connected.
The tool analyses facial landmarks such as the eyes, nose, lips and chin. These measurements are then compared to identify similarities that may not be obvious at first glance.
This kind of approach could be useful in serial or sexually motivated crimes, where offenders may target victims with similar physical characteristics. It gives investigators another way to look for links when other evidence is limited.
Importantly, facial similarity analysis is not proof on its own. It should be treated as an intelligence tool that supports further investigation, not as a replacement for DNA or confirmed forensic evidence.
Still, the research shows how forensic science is changing. Investigators are now using new methods to find patterns, revisit cold cases and uncover connections that may have been missed.
In complex investigations, even a small pattern can give police a new place to start.
Reference source: https://www.murdoch.edu.au/news/articles/new-forensic-tool-provides-intelligence-to-link-serial-killer-victims-by-analysing-facial-similarities