What is Digital Image Comparison?
Digital image or video comparison compares known and unknown subjects, vehicles, or objects depicted in digital imagery. What makes it a forensic image comparison to be used in a courtroom? The application of a widely accepted, objective, unbiased methodology to compare images. Subsequently, we identify whether an unknown subject matches the known subject.
In addition, we can also perform comparison services from image files extracted from video recordings like CCTV video evidence. These services assist criminal defense cases, law enforcement applications, and litigation. In fact, our comparison services solved a real case of mistaken identity.
We take pride in our ability to teach our clients, and the court, to answer difficult questions, truthfully.
A digital image comparison or video comparison investigation is only successful with high quality images. A wide variety of digital camera systems and formats can create these images. As a result, sufficient image quality is necessary to analyze and extract characteristics for photo forensics analysis. See an example of imagery considered adequate and insufficient for forensic image comparison below.
Image Comparison from Video Evidence
The most prolific source of police evidence is video images. However, video is not an accurate medium for identification on its own. For example, video images taken from surveillance recordings may not be authentic for identifying a subject.
Compression artifacts will reduce the accuracy of the specific details necessary to identify a suspect or vehicle. In fact, some cases where information that the surveillance camera didn’t initially record in the video images was added. And so, an expert must be able to interpret data to provide an accurate comparison.
Primeau Forensics applies the ACE-VR methodology to all image comparison investigations. This method ensures, without a doubt the accuracy of the results through repeatable processes.