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StyleGAN2

github.com

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Re: StyleGAN2

#21

Post by ImminentFate »

Veedrac wrote: post #9

I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. Click the row to show the answers. You might need to zoom out. https://veedrac.github.io/stylegan2-real-or-fake/game.html There's a harder version as well, where the image is zoomed in. https://veedrac.github.io/stylegan2-real-or-fake/game_croppe... I get 100% reliably with the first link (game.html), and got 4/5 on…

On your site I can consistently get 100% by looking at the backgrounds since they generate in somewhat inorganic patterns.

Re: StyleGAN2

#23

Post by ebg13 »

ImminentFate wrote: post #21
Veedrac wrote: post #9

I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. Click the row to show the answers. You might need to zoom out. https://veedrac.github.io/stylegan2-real-or-fake/game.html There's a harder version as well, where the image is zoomed in. https://veedrac.github.io/stylegan2-real-or-fake/game_croppe... I get 100% reliably with the first link (game.html), and got 4/5 on…

On your site I can consistently get 100% by looking at the backgrounds since they generate in somewhat inorganic patterns.

That's speculative at best. What's inorganic about the background in https://veedrac.github.io/stylegan2-real-or-fake/Curated/ffh... ?

Re: StyleGAN2

#24

Post by echelon »

Veedrac wrote: post #9

I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. Click the row to show the answers. You might need to zoom out. https://veedrac.github.io/stylegan2-real-or-fake/game.html There's a harder version as well, where the image is zoomed in. https://veedrac.github.io/stylegan2-real-or-fake/game_croppe... I get 100% reliably with the first link (game.html), and got 4/5 on…

> I set up this super simple ‘Which Face Is Real?’ (http://www.whichfaceisreal.com/) style challenge.

GANs still don't get teeth right. If any artificial face smiles, the teeth are a dead giveaway.

Re: StyleGAN2

#26

Post by gajomi »

ebg13 wrote: post #23
ImminentFate wrote: post #21

Earlier quoted context omitted.

On your site I can consistently get 100% by looking at the backgrounds since they generate in somewhat inorganic patterns.

That's speculative at best. What's inorganic about the background in https://veedrac.github.io/stylegan2-real-or-fake/Curated/ffh... ?

How is it speculative? The background does not always allow for the discrimination to be made but in the random sample of ~20 faces I looked it was the main factor in maybe 1/4 of the cases (I was %100 accurate on this random sample). Of course, my random sample is not your random sample. We could probably do a controlled experiment to get at these kinds of attributions systematically.

I might also say that a second major discriminating factor is skin texture, especially at boundaries.

Re: StyleGAN2

#27

Post by mzs »

gwd wrote: post #4
gwd wrote: post #3

Only watched the video, but one of the interesting things is the potential method to tell a generated image from a real one: namely, if you take a generated image, it's possible to find parameters which will generate exactly the same image. But if you take a real image, it's generally not possible to get exactly the same image, but only a similar one. The exact point in the video: https://youtu.be/c-NJtV9Jvp0?t=208

Also, looks like https://thispersondoesnotexist.com/ has been updated to use the new generator.

Phew I looked at three and they all had toothy smiles where the teeth grew out out of the lips and one had a floating tooth.

Re: StyleGAN2

#28

Post by nuccy »

ImminentFate wrote: post #21
Veedrac wrote: post #9

I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. Click the row to show the answers. You might need to zoom out. https://veedrac.github.io/stylegan2-real-or-fake/game.html There's a harder version as well, where the image is zoomed in. https://veedrac.github.io/stylegan2-real-or-fake/game_croppe... I get 100% reliably with the first link (game.html), and got 4/5 on…

On your site I can consistently get 100% by looking at the backgrounds since they generate in somewhat inorganic patterns.

Also after watching the video from the StyleGAN2 team https://drive.google.com/file/d/1f_gbKW6FUUHKkUxciJ_lQx29mCq... now I know that original StyleGAN, images from which are apparently used for this "game", produces faces with a "water droplet" and phase artifacts, so I was able to spot few fakes just by looking for those things.

Re: StyleGAN2

#29

Post by Veedrac »

echelon wrote: post #24
Veedrac wrote: post #9

I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. Click the row to show the answers. You might need to zoom out. https://veedrac.github.io/stylegan2-real-or-fake/game.html There's a harder version as well, where the image is zoomed in. https://veedrac.github.io/stylegan2-real-or-fake/game_croppe... I get 100% reliably with the first link (game.html), and got 4/5 on…

> I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. GANs still don't get teeth right. If any artificial face smiles, the teeth are a dead giveaway.

I thought StyleGAN2's teeth were one of the biggest upgrades to the face proper. The original's were pretty bad, but removing the phase artefact issue seems to have made a huge difference.

Here are some examples of teeth I found pretty decent:

https://veedrac.github.io/stylegan2-real-or-fake/PSI%201.0/0... https://veedrac.github.io/stylegan2-real-or-fake/PSI%200.5/0... https://veedrac.github.io/stylegan2-real-or-fake/PSI%200.5/0... https://veedrac.github.io/stylegan2-real-or-fake/Curated/ffh...

Re: StyleGAN2

#30

Post by TomVDB »

ImminentFate wrote: post #21
Veedrac wrote: post #9

I set up this super simple ‘Which Face Is Real?’ ( http://www.whichfaceisreal.com/ ) style challenge. Click the row to show the answers. You might need to zoom out. https://veedrac.github.io/stylegan2-real-or-fake/game.html There's a harder version as well, where the image is zoomed in. https://veedrac.github.io/stylegan2-real-or-fake/game_croppe... I get 100% reliably with the first link (game.html), and got 4/5 on…

On your site I can consistently get 100% by looking at the backgrounds since they generate in somewhat inorganic patterns.

When not the ears, it's the background.

If the real pictures had the background removed, I'd have a very hard time scoring 100%.

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