from the world's big
A.I. can now create fake videos of people from a single picture
Researchers advance machine learning to create videos of people from single stills and paintings.
- Samsung researchers improve AI modeling to quickly create realistic (but fake) videos.
- The model uses "single-shot learning" to create videos from a single picture.
- The application of the tech could be in telepresence, video conferencing and gaming.
An AI can now take a single picture of a person's face and animate it convincingly. This can lead to animating paintings and photos but also add to the mistrust of images and deepfakes online.
The new method from researchers at the Samsung AI Center in Moscow incorporates facial landmarks from a source face into the facial data from the target face to animate it. The target face will do anything done by the source face, which can be any talking head.
What is different here from previous technology that has been developed to achieve this is the fact that rather than needing a lot of data (like video) to analyze, this approach called "single-shot learning" needs just one image of a person's face. The video that is generated from that can show the face making a range of expressions and speaking with reasonable credibility.
The animation of the "Mona Lisa" using source videos.
The new tech front loads the process of facial landmark recognition with a large amount of data from a bank of talking head videos. It then trains the model to be very efficient in connecting parts of the target face with the source.
The new AI also uses the Generative Adversarial Network, having two models compete against each other in creating a more "real" result.
Here’s how adversarial learning works:
Where can you use this technology, other than contributing to the epidemic of fake news that is sure to eventually affect personal relationships as much as the national conversations? "Such ability has practical applications for telepresence, including videoconferencing and multi-player games, as well as [the] special effects industry," Samsung said.
You can read the paper from the Samsung AI Center here.
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A recent study on monkeys found that stimulating a certain part of the forebrain wakes monkeys from anesthesia.
- Scientists electrically stimulated the brains of macaque monkeys in an effort to determine which areas are responsible for driving consciousness.
- The monkeys were anesthetized, and the goal was to see whether activating certain parts of the brain would wake up the animals.
- The forebrain's central lateral thalamus seems to be one of the "minimum mechanisms" necessary for consciousness.
Pixabay<p>When the team electrically stimulated a part of the brain called the central lateral thalamus, located in the forebrain, the monkeys woke up: they opened their eyes, blinked, reached out, made facial expressions and showed altered vital signs. </p><p>"We found that when we stimulated this tiny little brain area, we could wake the animals up and reinstate all the neural activity that you'd normally see in the cortex during wakefulness," Saalmann told Cell Press. "They acted just as they would if they were awake. When we switched off the stimulation, the animals went straight back to being unconscious."</p><p>This area of the brain may function as an "engine for consciousness," Redinbaugh told Inverse. Although past studies have shown that electrical stimulation can arouse the brains of humans and animals, the new findings are unique because they reveal which specific neural interactions appear to be minimally necessary for consciousness.</p><p>"Science doesn't often leave opportunity for exhilaration, but that's what that moment was like for those of us who were in the room," Redinbaugh told <a href="https://www.inverse.com/science/first-squid-mri-study-brain-complexity-similar-dogs" target="_blank"><em>Inverse</em></a><em>.</em></p>
Future applications<p>The team said the findings could have many applications down the road, but more research is needed.</p><p>"The overriding motivation of this research is to help people with disorders of consciousness to live better lives," Redinbaugh told Cell Press. "We have to start by understanding the minimum mechanism that is necessary or sufficient for consciousness, so that the correct part of the brain can be targeted clinically."</p><p>"It's possible we may be able to use these kinds of deep-brain stimulating electrodes to bring people out of comas. Our findings may also be useful for developing new ways to monitor patients under clinical anesthesia, to make sure they are safely unconscious."</p>
The coronavirus pandemic has brought out the perception of selfishness among many.
- Selfish behavior has been analyzed by philosophers and psychologists for centuries.
- New research shows people may be wired for altruistic behavior and get more benefits from it.
- Crisis times tend to increase self-centered acts.
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