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The title is a bit misleading. Detail was lost, that is the law. Raisr makes up detail based on some learned likelihood of that detail being there. You could a

by tinco 10y ago

The title is a bit misleading. Detail was lost, that is the law. Raisr makes up detail based on some learned likelihood of that detail being there. You could add any image to Raisr and it will make up more detail, you could let it loop over the same picture over and over and it will probably add infinite detail, or up to some fixed point. What's cool is that for many pictures, it's good enough at making up detail that the result is credible.

tyingq 10y ago
Seems similar to image inpainting...educated guesses that can be stunningly accurate, or stunningly bad :)
- kartan 10y ago
  Yes. And as such it has obvious artistic value, as images look better. But I can see that people can misuse them CSI style. You can add more detail to an image, but it is mainly an artistic interpretation that is not the real original image.
jacobolus 10y ago
From TFA, “the quality gain is clear to see”, and then they show a picture where pixels have been upsized into weird painterly blotches, with essentially the same level of detail as the original. This doesn’t seem to produce results which are obviously better than the state of the art from 20 years ago. (Or if so, this article certainly doesn’t demonstrate it.) So is the novelty supposed to be that it’s less computationally expensive? Here’s a site I just found in a quick web search with some comparisons of other upscaling tools: http://www.americaswonderlands.com/digital_photo_interpolation.htm http://www.americaswonderlands.com/digital_photo_interpolati...
- walrus01 10y ago
  The blotches in the example on the right resemble what happens when you run an ordinary raster image through some freely available raster-to-vector image processing tools.
  - Animats 10y ago
    Reminds me of Jaggies Are Gone, a old Macintosh application which did this sort of thing by dumber means. There's an neural net system which upscales old low-resolution anime stills.[1] It's been trained on hand-drawn cartoons, so it restores line art detail. That's very similar to this Google thing. [1] http://waifu2x.udp.jp/ http://waifu2x.udp.jp/
    - tornadoboy55 10y ago
      Didn't those guys enlarge images by using some sort of mandelbrot-based process?

by tinco 10y ago

tyingq 10y ago

Seems similar to image inpainting...educated guesses that can be stunningly accurate, or stunningly bad :)

kartan 10y ago
Yes. And as such it has obvious artistic value, as images look better. But I can see that people can misuse them CSI style. You can add more detail to an image, but it is mainly an artistic interpretation that is not the real original image.

jacobolus 10y ago

From TFA, “the quality gain is clear to see”, and then they show a picture where pixels have been upsized into weird painterly blotches, with essentially the same level of detail as the original. This doesn’t seem to produce results which are obviously better than the state of the art from 20 years ago. (Or if so, this article certainly doesn’t demonstrate it.) So is the novelty supposed to be that it’s less computationally expensive? Here’s a site I just found in a quick web search with some comparisons of other upscaling tools: http://www.americaswonderlands.com/digital_photo_interpolation.htm http://www.americaswonderlands.com/digital_photo_interpolati...

walrus01 10y ago
The blotches in the example on the right resemble what happens when you run an ordinary raster image through some freely available raster-to-vector image processing tools.
- Animats 10y ago
  Reminds me of Jaggies Are Gone, a old Macintosh application which did this sort of thing by dumber means. There's an neural net system which upscales old low-resolution anime stills.[1] It's been trained on hand-drawn cartoons, so it restores line art detail. That's very similar to this Google thing. [1] http://waifu2x.udp.jp/ http://waifu2x.udp.jp/
  - tornadoboy55 10y ago
    Didn't those guys enlarge images by using some sort of mandelbrot-based process?