The worst has happened. You receive an emailed kidnap demand with a picture of your loved one in dire straits.
You contact the authorities, and in a flash (relatively speaking), they have identified the kidnapper and possibly some accomplices, and are well on their way toward recovering the victim. How did this happen? By identifying the faces of the kidnappers caught in the reflection of your loved one’s eyes.
The scenario above isn’t yet standard practice, but the basic technology for accomplishing the task now exists. Familiar faces can be recognized from a very small number of pixels, as small as 7 x 10 pixels in one study. A very familiar example appears below. The image on the left has 16 x 20 pixel resolution, while on the right the same image is blurred to make recognition easier.
It is now commonplace for digital cameras to have 10-50 megapixel CMOS sensors. There is even a smartphone, the Nokia Lumia 1020, that has a 41-MP sensor. (Although this camera automatically generates an oversampled 5-MP image from the raw data, the raw data is still available for use.)
A 50 mm equivalent lens covers a horizontal angle of about 40 degrees. With a 40-MP sensor (and good optics), each pixel is about one-third of a minute of arc in size, enabling resolution about five times more acute than that of the human eye. In addition, a good picture captures everything within the bit depth of the pixels, whereas our eyes have a very small area of high resolution on the retina, and our brains fill in the details, often incorrectly. A camera captures a lot of information which we cannot “see at a glance,” or even by careful examination.
A study just carried out by Dr. Rob Jenkins of the University of York and Christie Kerr of the University of Glasgow, both in the UK, has found that the picture of a high-end camera is capable of seeing images reflected from the corneas of a subject being photographed. The images, which can be of high enough quality to identify people by their faces, cover most of the area in front of the subject, owing to the curvature of the cornea. In essence, a fisheye view of the entire region in front of the subject can be found in the image of the subject’s eyes.
While there are applications which would benefit society, there are also many potential uses with obvious “Big Brother” privacy issues.
The Latest on: Facial recognition
via Google News
The Latest on: Facial recognition
- Coronavirus fever checks, facial recognition implemented by burger chainon March 24, 2020 at 5:19 pm
Sukhdev is perceived as just another romantic revolutionary or Bhagat Singh’s aide, but he was central to the HSRA’s aims.
- Researchers highlight racial bias in speech recognition systemson March 24, 2020 at 5:18 pm
Researchers have identified significant racial disparities in speech recognition systems from five of the world's biggest tech companies. According to a study from Stanford University, systems from ...
- Facial Recognition to Check Pedestrians at Border Crossingon March 24, 2020 at 4:22 pm
Shaw Drake, policy counsel for the ACLU Border Rights Center in El Paso, said both CBP and the TSA have dramatically expanded their use of facial recognition technology. According to the ACLU, the ...
- 100,000 cameras: Moscow uses facial recognition to enforce quarantineon March 24, 2020 at 10:02 am
In Moscow, a network of 100,000 cameras equipped with facial recognition technology are being used to make sure anyone placed under quarantine stays off the streets. Russia is just one of several ...
- How facial recognition could be used by supermarkets to ration foodon March 24, 2020 at 9:57 am
As China and Russia turn to facial recognition to combat coronavirus, could the UK do the same? Credit: Telegraph/Telegraph Three years ago, Beijing installed camera-equipped machines in the Temple of ...
- Wolfcom Embraces Body Cam Face Recognition Despite Concernson March 23, 2020 at 3:30 pm
Even as it becomes ubiquitous in consumer tech, facial recognition has been increasingly verboten in the marketplace for police body cameras. Last June, Axon, the nation’s largest body-cam provider, ...
- New Venture Shines Spotlight on Facial Recognition Collection and Databaseson March 20, 2020 at 8:00 am
Facial recognition software, and the databases that the images end up in, remain controversial. At the time of writing, a petition to stop the Met Police using facial recognition surveillance is a few ...
- Is ICE’s Use of a Maryland Facial Recognition Database Lawful?on March 19, 2020 at 5:00 am
The Washington Post reported recently that U.S. Immigration and Customs Enforcement (ICE) officials have accessed, without obtaining judicial process, a Maryland facial recognition database that ...
- Facebook’s own facial recognition app could show employees connections to their friend liston March 18, 2020 at 10:59 am
Facebook built a facial recognition tool that could be used by employees to scan faces of their friends who had certain features activated on the social media giant, according to a new report.
- How China built facial recognition for people wearing maskson March 18, 2020 at 6:45 am
Hanwang, the facial-recognition company that has placed 2 million of its cameras at entrance gates across the world, started preparing for the coronavirus in early January. Huang Lei, the company’s ...
via Bing News