Deepfake used to attack activist couple shows new disinformation frontier
Experts in deceptive imagery used state-of-the-art forensic analysis programs to determine that Taylor’s profile photo is a hyper-realistic forgery - a “deepfake.”
Something about the Ventriloquist's Dummy and the dangers of impersonating an influential leader.
Image credt: Oliver Taylor Deepfake, Reuters, Jul 2020
Image cloaking tool thwarts facial recognition programs
Aug 2020. phys.org
Reverse camoufaluge? Fill the pool with dirty data; it's a simple approach. This technique is named Fawkes after the V for Vendetta guy, also known as the Anonymous Mask from the online shadow activist group circa 2010.
"What we are doing is using the cloaked photo in essence like a Trojan Horse, to corrupt unauthorized models to learn the wrong thing about what makes you look like you and not someone else," Fawkes co-creator Ben Zhao, a computer science professor at the University of Chicago, said.
"Our original goal was to serve as a preventative measure for Internet users to inoculate themselves against the possibility of some third-party, unauthorized model," the team recently stated in a FAQ sheet.
Deepfake detection tool unveiled by Microsoft
Sep 2020, BBC News
"The only really widespread use we've seen so far is in non-consensual pornography against women," commented Nina Schick, author of the book Deep Fakes and the Infocalypse."But synthetic media is expected to become ubiquitous in about three to five years, so we need to develop these tools going forwardSynthetic media and fingerprinted news - Microsoft has teamed up with the BBC, among other media organisations, to support Project Origin, an initiative to "mark" online content in a way that makes it possible to spot automatically any manipulation of the material.
New photon-counting camera captures 3-D images with record speed and resolution
Apr 2020, phys.org
24,000 fps:
The camera's speed makes it possible to measure the time a photon hits the sensor very precisely. This information can be used to calculate how long it takes individual photons to travel the distance from a source to the camera, known as time-of-flight. Combining time-of-flight information with the ability to capture a million pixels simultaneously enables extremely high-speed reconstruction of 3-D images.
No comments:
Post a Comment