Neural network image upscaling

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john71
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Neural network image upscaling

Post #1by john71 » 29.10.2020, 11:12

Hi! Neural image upscaling could help us make HD textures from low resolution ones. I found the projects neural-enhance and waifu2x which are developing open source tools. Do you know any other open source or offline neural upscaling projects?

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Goofy
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Post #2by Goofy » 29.10.2020, 13:50

Hi John. :hi:
I searched and found many pages where it is possible to make a neural-enhance test, so I tried the "classic" 2k Phobos Celestia image, obtaining for free a 4k image, in a metter of seconds (a payment isdue for images bigger than 3000x3000 pixel , alas!).
Then I enlarged and cropped both images, and here we can see that, effectively, the image looks less noisy, smal craters are no more "square blobs", and the overall appearance is better, IMHO.
Comments?
Goofy :smile:
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Art Blos M
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Post #3by Art Blos » 29.10.2020, 13:56

Goofy wrote:I searched and found many pages where it is possible to make a neural-enhance test, so I tried the "classic" 2k Phobos Celestia image, obtaining for free a 4k image, in a metter of seconds (a payment isdue for images bigger than 3000x3000 pixel , alas!).
Then I enlarged and cropped both images, and here we can see that, effectively, the image looks less noisy, smal craters are no more "square blobs", and the overall appearance is better, IMHO.
Comments?
IMHO, the difference is not significant. Any graphics editor can perform similar processing.
Founder and head of the project "Celestia Origin"

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john71
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Post #4by john71 » 29.10.2020, 14:14

Hi Goofy, "real" neural upscaling works very well, but these online versions I my opinion are not very good. Gimp can do the same with noise reduction. But it can be brutally effective, like old movies from the 1890s look very sharp.

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Goofy
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Post #5by Goofy » 29.10.2020, 14:33

John 71, mine was just a try to understand what we are spelking of, and the result of this free commercial test was looking promising, and faster than Gimp or Photoshop... :think:
So we'll hope for "real" open source network scaling disponibility....

Goofy :wink:
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Post #6by john71 » 29.10.2020, 14:38

That's OK, but try this one: https://www.youtube.com/watch?v=fo_eZuOTBNc

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Goofy
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Post #7by Goofy » 29.10.2020, 17:37

Yes, I have already seen some of these restored old time movies.
Results are interesting and nice, even if, for my taste, I prefer them in original, even with all the characteristic defects of those first attempts of filmography.
Anyway, I found somewhere that Neural Enhancing is particularly useful for this kind of movies and for anime.
Will it be useful for images like the ones we use in Celestia, too?
Thank you.
Goofy :smile:
"Something is always better than nothing!"
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Challenger007
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Post #8by Challenger007 » 30.10.2020, 10:55

Art Blos, I agree with you. the difference in picture quality is negligible. Perhaps it was worth taking a better quality source to make the final picture clearer.


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