Arab Today, arab today pupil reflections reveal hidden faces behind camera
Last Updated : GMT 05:16:24
Arab Today, arab today
Arab Today, arab today

Pupil reflections reveal hidden faces behind camera

Arab Today, arab today

Arab Today, arab today Pupil reflections reveal hidden faces behind camera

Tehran - FNA

Your eyes may be giving away more information than you would have ever imagined. A team of researchers in the Department of Psychology at the University of York has been taking a very close look at some photographs. Specifically, the team has been searching the eyes in photos for the reflections of those behind the camera. The inky black of the pupil actually makes for a very good reflective surface — it’s like a black mirror. The researchers found that it was possible to recover low resolution images of faces from the reflection, but the faces were about 30,000 times smaller than the subject’s real face. The resolution of a reflected face at normal photo taking distance is exceedingly low — about 322 pixels for the entire thing. The retrieved images were processed to smooth the pixels and ramp up the contrast to make the subject’s features more visible. These tiny thumbnails turned out to be amazingly good for identifying people despite the blurriness. We are all hardwired to recognize and remember faces, so even the suggestion of certain features can look like a face. In this case, there is enough data for people to recognize someone they know with 84% accuracy, according to the paper. In fact, even subjects not known to study participants were matched with real photos with 71% accuracy. This is more than an interesting photographic quirk — it could be of use in police investigations. Any crime in which there are photos taken of a victim, like hostage situations or child abuse cases, could be combated with this method. Perpetrators rarely think to obscure their reflection in a victim’s eyes. Plus, it’s kind of fitting, right? The University of York team also speculates that digital images of a more benign nature recovered during the course of an investigation could prove useful in developing a list of individuals linked to a suspect. Photographs could also be used to tie people to specific locations and times to exonerate innocent people and narrow a list of suspects. Yes, someone else’s eye could be your alibi. This all sounds pretty cool, but the images you’re taking with most DSLRs won’t be sharp enough to preserve any facial reflections. The researchers were working with 39 megapixel images, and lighting conditions were optimal. As sensor resolution increases, this technique could become a viable option for law enforcement. However, it isn’t regular cameras that will be the key — cell phone photos are becoming far more common. Most high-end phones top out at 13MP or so, which is still far short of the resolution needed to recover reflections from the pupil. Still, in a few years the unrelenting march of progress could result in smartphones with cameras that produce images large enough to leak information in the eyes of those you photograph.

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today pupil reflections reveal hidden faces behind camera Arab Today, arab today pupil reflections reveal hidden faces behind camera

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today pupil reflections reveal hidden faces behind camera Arab Today, arab today pupil reflections reveal hidden faces behind camera

 



Arab Today, arab today
Arab Today, arab today Designer Aql Faqih aspires to innovation

GMT 18:41 2017 Friday ,20 October

Designer Aql Faqih aspires to innovation
Arab Today, arab today Barcelona through George Orwell’s eyes

GMT 13:44 2017 Friday ,20 October

Barcelona through George Orwell’s eyes
Arab Today, arab today Etiquette expert underlines importance of gifts

GMT 17:52 2017 Sunday ,03 September

Etiquette expert underlines importance of gifts
Arab Today, arab today 35 Egyptian police, troops die in clashes

GMT 04:36 2017 Saturday ,21 October

35 Egyptian police, troops die in clashes
Arab Today, arab today Hiring not part of Alibaba pledge

GMT 11:26 2017 Wednesday ,18 October

Hiring not part of Alibaba pledge
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today World's deepest lake in peril

GMT 15:54 2017 Friday ,20 October

World's deepest lake in peril
Arab Today, arab today Ex-French minister Dati wants tough action

GMT 10:54 2017 Thursday ,19 October

Ex-French minister Dati wants tough action
Arab Today, arab today Delhi braces for pollution 'airpocalypse'

GMT 16:07 2017 Friday ,20 October

Delhi braces for pollution 'airpocalypse'
Arab Today, arab today The history of solar eclipses

GMT 05:16 2017 Sunday ,20 August

The history of solar eclipses
Arab Today, arab today Sweden to get biggest car factory

GMT 14:10 2017 Friday ,20 October

Sweden to get biggest car factory
Arab Today, arab today Mercedes says recalls 400,000 UK cars

GMT 06:56 2017 Tuesday ,17 October

Mercedes says recalls 400,000 UK cars
Arab Today, arab today Actress Shery Adel happy for Egypt’s qualification

GMT 08:57 2017 Wednesday ,18 October

Actress Shery Adel happy for Egypt’s qualification
Arab Today, arab today Massacre fears spark race

GMT 19:09 2017 Thursday ,19 October

Massacre fears spark race

GMT 07:47 2017 Tuesday ,17 October

Hussein Fahmy happy for honoring in festival

GMT 18:15 2017 Monday ,16 October

British actress becomes fifth woman

GMT 16:53 2017 Tuesday ,05 September

Youssra depended on colored foam

GMT 16:00 2017 Wednesday ,18 October

Climate-disrupting volcanoes helped topple

GMT 10:46 2017 Saturday ,05 August

Nanis reveals simple ideas for home renovation

GMT 06:43 2017 Wednesday ,18 October

Fake dentists ply brisk trade

GMT 06:49 2017 Tuesday ,17 October

EasyJet, Lufthansa among seven to bid

GMT 17:12 2017 Monday ,07 August

Al-Shawaifi reveals secrets of total solar eclipse

GMT 20:46 2017 Thursday ,19 October

Qualcomm files lawsuits in China to ban iPhones

GMT 16:53 2017 Saturday ,02 September

Mai importance of gifts during Eid Al-Adha
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday