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Cake day: June 23rd, 2024

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  • Upscaling has always had questionable results. There are some serious uses: for example, drawings upscale well if there is no more information than pixels anyway. For example, consider a low-res flag of Japan, say 24x16. You know that there are no vector strokes smaller than 10 pixels and the only such stroke that matches pixel values is a circle, so you can redraw it successfully at any resolution. It’s the Whittaker-Nyquist-Kotelnikov-Shannon sampling theorem. Waifu2x will do well too, reinterpreting the image with little distortion.

    With photos and video, it’s a lot trickier. Things that appear noisy can be smoothed out or the noise can be sharpened and interpreted as some signal. Same with blur. Legitimate techniques such as averaging static areas in consecutive frames can bring noise down but only to a certain point. You can’t know how to draw a square of 16 pixels if you only know 4 and there is no limit on how sharp the original image could have been. It’s always been guesswork but AI is good at taking context clues compared to naïve sharpening or denoising.




  • AI is gonna take the jobs of all the honest hand-painting upscalers!1!!!1

    Now seriously, I looked at all the shots up close and there is indeed inconsistent focus in the crowd shot based on whether the AI was able to use its “knowledge” of the human face. Still, you need to compare it to the “before” image to really judge if the AI did a poor job. I think it is OK, at least better than conventional denoising and sharpening.

    Also, do you realize that the pre-upscale version is still going to be available - if not on streaming, on old physical media and pirated copies? They may have wasted money on the upscale but didn’t literally destroy the movie. Vote with your wallet and watch a fanmade film scan, the 1080p Blu-ray or whatever. Or stream in 1080p quality to scale it back down, which should hide the sometimes overemphasized details.









  • Don’t forget the weekdays. The total births in the dataset by weekday are:

    SUN |||||||||||||||||||||||| 5886889
    MON ||||||||||||||||||||||||||||||||||||| 9316001
    TUE ||||||||||||||||||||||||||||||||||||||||| 10274874
    WED |||||||||||||||||||||||||||||||||||||||| 10109130
    THU |||||||||||||||||||||||||||||||||||||||| 10045436
    FRI ||||||||||||||||||||||||||||||||||||||| 9850199
    SAT |||||||||||||||||||||||||| 6704495