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Comment by lucb1e

3 years ago

DeepL.com translation of relevant bit (there's some irony in using ML to be able to read text about ML):

> However, the lunar photography environment has physical limitations due to the long distance to the moon and lack of light, so the actual image output from the sensor at high magnification is noisy and not enough to provide the best image quality experience even after compositing multiple images.

> To overcome this problem, Galaxy Camera applies an AI detail enhancement engine (Detail Enhancement technology) based on deep learning at the final stage to effectively remove noise and maximize the details of the moon, resulting in bright and clear moon photos.

It's not just this one thing, though. It also describes moon detection resulting in: setting brightness, using optical stabilization, "motion sensor data and video analysis"¹ for stabilization (VDIS), and fixing the focus at infinity. The "AI" magic is then described as being a detail enhancer, which could mean anything from {generically decreasing blur and improving contrast} to {applying a model that was purposefully overfit on the moon} (most likely it's the latter). Either way it's fake, obviously, but why do all the effort and make compromises to get a good moon shot if you're going to replace it anyway?

> If you shoot the moon in the early evening, the sky around the moon will not be the color of the sky you see, but rather a black sky, which is caused by forcing the image brightness down to capture the moon clearly. [I think this translation should have read "picture brightness"; elsewhere it also says "screen brightness" so I suspect the Korean word for "picture" is ambiguous]

So you can't shoot anything near the moon, like if someone is holding the moon up with a hand or something, presumably that would be all black. It's apparently still relying on the sensor to get most of the way there and using ML for the last leg.

Imo the feature should spawn a warning on screen "Details of moon filled in by computer and may differ from reality" with buttons for [ok] to quickly dismiss as well as [don't show again]. Then you can't not know that your images are being faked and it's not disingenuous, while most people would still appreciate the better quality because it'll be/work fine in 99% of cases.

¹ summary explanation of VDIS found on https://r2.community.samsung.com/t5/CamCyclopedia/VDIS-Video...