Solving crimes using images reflected on the retina.

It may be possible to identify the faces of people outside the frame from the reflections in the eyes of the person being photographed; this discovery could one day help solve criminal cases.

It may be possible to identify someone's face from the reflection in their eyes during a photograph; this discovery could one day help solve criminal cases.

It may be possible to identify someone's face from the reflection in their eyes during a photograph; this discovery could one day help solve criminal cases.

The eyes are not only mirrors reflecting the soul, but also mirrors reflecting the world around us. Recently, a group of British researchers discovered that today's high-resolution digital images are so "sharp" that they can zoom in on the eyes in a photograph and capture images of people outside the frame reflected on the retina of the person in the photo.

Combining this with the fact that humans have a very good ability to recognize faces, even from poor-quality images, gives us a valuable source of information for solving cases.

Previously, this assumption was considered valid if you were the one holding the camera, and therefore you wouldn't be in the photo.

Dr. Rob Jenkins, from the Psychology Department at York University, said, “The pupil of the eye is like a black mirror. To enlarge the image, you have to shrink and adjust the contrast. The image of a face found from the reflection in a person’s eye will be about 30,000 times smaller than the person’s actual face.”

In the study, he and his colleague Christie Kerr, from the Psychology Department of the University of Glasgow, reduced the resolution of high-resolution passport-style photographs and extracted facial images of people standing outside from the reflections in the eyes of the person being photographed.

Although the resolution of the images captured was quite low (some were only 27 pixels wide), observers were still able to accurately identify the people standing outside.

When observers were shown photos to compare faces, they were able to identify strangers 71% of the time and familiar faces 84% ​​of the time.

In another experiment, observers were able to accurately identify a familiar face from a low-resolution reflection in their eyes.

The research shows its potential for application in solving criminal cases.

For example, analyzing the reflections in the eyes of victims photographed during child sexual abuse or abduction cases, or images of people extracted from surveillance cameras used as investigative evidence, can provide crucial clues about intruders or their accomplices, or their connection to a particular location.

According to Hanoi Moi