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Thread: "Deepfake": A.I. can now create fake videos of people from a single picture

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    a.k.a. Alpensun Ringenwald's Avatar
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    "Deepfake": A.I. can now create fake videos of people from a single picture

    Samsung engineers have now developed realistic talking heads that can be generated from a single image, so AI can even put words in the mouth of the Mona Lisa.

    The new algorithms, developed by a team from the Samsung AI Center and the Skolkovo Institute of Science and Technology, both in Moscow work best with a variety of sample images taken at different angles – but they can be quite effective with just one picture to work from, even a painting.



    Not only can the new model work from a smaller initial database of pictures, it can also produce computer-generated videos in a shorter time, according to the researchers behind it.

    And while there are all kinds of cool applications that the technology could be used for – such as putting an ultra-realistic version of yourself in virtual reality – it's also worrying that completely fake video footage can be produced from as little as one picture.

    "Such ability has practical applications for telepresence, including videoconferencing and multi-player games, as well as the special effects industry," write the researchers in their paper.



    The system works by training itself on a series of landmark facial features that can then be manipulated. A lot of the training was done on a publicly available database of more than 7,000 images of celebrities, called VoxCeleb, plus a huge number of videos of people talking to the camera.

    Where this new approach improves on past work is by teaching the neural network how to convert landmark facial features into realistic-looking moving video many times over. That knowledge can then be deployed on a few pictures (or just one picture) of someone the AI has never seen before.

    The system makes use of a convolution neural network, a type of neural network based on biological processes in the animal visual cortex. It's particularly adept at processing stacks of images and recognising what's in them – the "convolution" essentially recognises and extracts parts of images (it's also used in image searches on the web and self-driving car technology, for instance).



    Like other AI-driven face generation tools we've seen, the last stage in the process checks for 'perfect realism' – technically an adversarial generative model. Any frames that look too weird or unnatural get cut and rendered again, leaving a better quality final video.

    This technique manages to overcome two big problems in artificially generated talking heads: the complexity of heads (with mouths, hair, eyes and so on), and our ability to easily spot a fake head (character faces are among the hardest elements for video game designers to get right, for example).

    The system, and others like it, are bound to get better as algorithms improve and training models become more efficient – and that means a whole new set of questions about whether you can trust what you're seeing or hearing if it's in digital form.

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    On the plus side, your favourite movie and TV stars never have to grow old and die – AI similar to this is soon going to be smart enough to produce fully realistic performances from just a few photographs, and in record time, too.

    Just remember that seeing isn't always believing any more.

    The research has been published on the pre-print server arXiv.org.
    Source: https://www.sciencealert.com/samsung...a-single-image

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    Anachronism "Friend of Germanics"
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    Still pretty crude, especially when working with single images. The Marilyn Monroe animation looks nothing like her, for example. However, if you want to frame a famous person saying something, you could do so, if you have a large sample database, plus use modeling of their particular mannerisms. The technology just has to advance a bit, and CNN could manufacture footage, say, of Donald Trump ordering someone to be murdered, and repeat it all day, ruining his chances at being elected.
    Most people think as they are trained to think, and most people make a majority.

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    Senior Member Ravenrune's Avatar
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    Amazing seeing the Mona Lisa like that


    Pretty amazing but also carrying some very negative possibilities not only for fabricating video to incriminate innocent people but also to actually alter history (even more) to support certain ideas!

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    Quote Originally Posted by Ravenrune View Post
    Amazing seeing the Mona Lisa like that


    Pretty amazing but also carrying some very negative possibilities not only for fabricating video to incriminate innocent people but also to actually alter history (even more) to support certain ideas!

    And that is the scary part. Once the Government has this technology anything or anyone can be manipulated. Whole countries could be toppled by a single video, leaders as well. Extortion and blackmail also comes to mind.
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    Sound methods Chlodovech's Avatar
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    Quote Originally Posted by Herr Rentz View Post
    And that is the scary part. Once the Government has this technology anything or anyone can be manipulated. Whole countries could be toppled by a single video, leaders as well. Extortion and blackmail also comes to mind.
    I believe the opposite. From now on video will simply not be credible on its own. Any defence lawyer worth his fee will be playing the Mona Lisa video from now on.

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    Senior Member Herr Rentz's Avatar
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    That is a very good point. Just about any video could be discredited in court by showing old Mona.
    American by birth, made of parts from Emmingen, Baden-Württemberg.

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    Hmm, seems VR is evolving fast and while it's interesting, it's also a bit worrisome. I've also read about voice generators, which are based on a voice sample and sound just like the original. As well as creating composite faces of peoples who don't exist in reality. Here this website with examples of peoples who don't really exist:

    https://www.thispersondoesnotexist.com

    But it still needs a bit of work in my view, some of the images look a bit odd. I can't exactly put the finger on it, but they look a bit distorted, like from behind a glass of water or something. For example the one of Marylin Monroe doesn't look exact, her face is a little bit distorted and elongated compared to the original.

    It's true that maybe private persons or politicians could try to use this technology to discredit, extort or blackmail other peoples. But in courts of law it would need to be proven by a sound or video analysing expert that it is authentic material and not a VR generation. However, I could see many private peoples being fooled by the VR. Tabloids and scandal press would quickly post and repost scandalous claims, especially to ruin politicians and public persons images. False flags could be created of shootings and crimes, and peoples seeing them on TV would believe it. Unless someone was a direct local witness, they wouldn't know the truth.

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    Everything is becoming fake, we no longer think for ourselves but gobble up whatever we hear, see and read. Always "VERIFY"...............
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