Netherlands Forensic Institute

An investigation by an expert examines whether certain digital images (photos and/or videos) were taken with a certain digital camera and/or mobile phone. To answer this question, the camera identification algorithm is deployed, which identifies the camera.

In an expert examination, facial images are compared. The facial image comparison aims to determine whether a person visible in camera images (crime suspect) and the image of a known face (police photo of a suspect) are of the same person or two different people.

The process involves analysing a DNA profile from a supplied trace and comparing the DNA profile with the DNA profile of persons within the case or with profiles in the DNA database.

In criminal investigations, voice comparison is used to find out whether the suspect's and offender's voices are the same. One of the methods that can be used for this purpose is automatic speaker comparison.