[HN Gopher] Google researchers detail new method for upscaling l...
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Google researchers detail new method for upscaling low-resolution
images
Author : zonovar
Score : 15 points
Date : 2021-08-31 20:54 UTC (2 hours ago)
(HTM) web link (www.dpreview.com)
(TXT) w3m dump (www.dpreview.com)
| dang wrote:
| We changed the URL from https://petapixel.com/2021/08/30/googles-
| new-ai-photo-upscal..., which points to this. Both articles point
| to this one, which had a recent and related thread:
|
| _High Fidelity Image Generation Using Diffusion Models_ -
| https://news.ycombinator.com/item?id=27858893 - July 2021 (19
| comments)
| [deleted]
| dakial1 wrote:
| Some of the images in the article seemed to be high-res images
| that where downscaled to low-res (and it makes sense to see how
| the upscalling process changes the original), but wouldn't that
| make it easier for the ML to revert the downscaling process
| rather than taking an original low-res photo and upscale it?
| sorokod wrote:
| If we start with multiple source images that are "small" (by some
| definition of small) perturbations of each other and upscale
| them, what can be said about the results?
| emrah wrote:
| It is pretty impressive/crazy how well CDM and SR3 work together
| to go from 32x32 to 256x256 e.g. the Irish Setter. How could the
| algos possibly know the lighter coloring (due to breed or
| lighting) between the dog's eyes?! It's basically inventing
| pixels
| sorokod wrote:
| How confident can you be that the initial 32x32 was an Irish
| Setter?
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(page generated 2021-08-31 23:03 UTC)