Author Topic: letsenhance.io - CSI-style image upscaling  (Read 4684 times)

2018-01-31, 14:35:06

maru

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Here is a couple of tests I made of the https://letsenhance.io/ tool. It basically lets you upload an image and get a 4x upscaled version after a few minutes of processing time, all thanks to the magic of neural networks.
Currently you can upload just a few images for free (3? 5?), and then the paid version kicks in. You can choose between the "boring" or "magic" upscaling presets. The "magic" one is where the real magic begins. Suddenly textures are magically recovered from the areas which are otherwise blurry (even in the original image), and more details are visible. You basically get an image generated in 4x higher resolution, or using a camera with 4x more mpx.

I think this is really interesting for upscaling photos and renders for print, especially renders, where RAM may be an issue at some point. You can get a pretty much lossless version of your image in 4x the original resolution, which can be then used for printing or display in super high res.


"ori" is a crop of the original image upscaled by 400% in Photoshop using the "automatic" supersampling option
"boring" is the result of using the "boring" preset, then cropped to show the same region
"magic" is the result of using the "magic" preset, then cropped to show the same region

Discuss. I am also curious about your tests!
Note: this tool is not related to Corona in any way, that's why I am writing in the "General CG" category.

I suggest middle mouse button clicking on the thumbnails below to open the examples in tabs one by one.

2018-01-31, 14:49:18
Reply #1

cecofuli

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I'm in shock, really! O_O

2018-01-31, 15:05:44
Reply #2

Nejc Kilar

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So CSI was doing it right all along, we just didn't know about the tech at the time. Go Horatio!

Thanks for sharing, very interesting stuff!


2018-01-31, 15:16:43
Reply #3

maru

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2018-01-31, 15:46:20
Reply #4

romullus

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Is this paid persion, that you tested with? I'm asking because i tested that exact service few weeks ago (free version) and my results was disapointing - it created many double lines and "enhanced" image with creative "details" wherever there was noise in original picture. Also in my case there was barely observable difference between "magic" and "boring" methods, but in your examples, the difference is very obvious.
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2018-01-31, 15:55:57
Reply #5

maru

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Is this paid persion, that you tested with? I'm asking because i tested that exact service few weeks ago (free version) and my results was disapointing - it created many double lines and "enhanced" image with creative "details" wherever there was noise in original picture. Also in my case there was barely observable difference between "magic" and "boring" methods, but in your examples, the difference is very obvious.
I am using the free version. I don't think there is any difference in terms of quality between free and paid. Paying just gives you more slots to upload images.
They upgraded to version 2.0 today (I think), so maybe that's the difference. I also did not test with noisy images. But I also tried this much earlier and had similar results, so maybe it just depends on the image.

2018-01-31, 17:25:11
Reply #6

pokoy

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Many thanks for posting this, I'll certainly need that at some point.

2018-01-31, 19:15:08
Reply #7

romullus

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Let's see if i still have free slots available, maybe they indeed changed something to the better :]
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2018-01-31, 19:17:35
Reply #8

maru

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Let's see if i still have free slots available, maybe they indeed changed something to the better :]
They should give you free slots after this update.
If not, then you can contact them and I am sure they will give you something, they are pretty responsive.

2018-01-31, 19:43:01
Reply #9

Charlie Nicols

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My results are very mixed! Cool spot to keep an eye on though. Thanks.

2018-01-31, 19:57:48
Reply #10

romullus

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I think mixed is the right word. Some parts of an image after their magic enhance looks definitely better than photoshop's bilinear upscale and some parts looks actually worse. But look what's happens when you downscale both images (bilinear and "magic") back to original. Ewww!

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2018-02-01, 09:54:08
Reply #11

maru

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I think mixed is the right word. Some parts of an image after their magic enhance looks definitely better than photoshop's bilinear upscale and some parts looks actually worse. But look what's happens when you downscale both images (bilinear and "magic") back to original. Ewww!
I guess it's the effect of their "hallucinations" in action. I wonder what would happen if this process was repeated like 100 times. :)

2018-02-01, 10:55:09
Reply #12

romullus

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It could be that selfie of AI slowly would emerge out of your picture o_O
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2018-02-01, 13:11:57
Reply #13

maru

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It could be that selfie of AI slowly would emerge out of your picture o_O
or something like "help me, they keep me here and force me to photoshop images 24/7"

2018-02-01, 15:23:46
Reply #14

romullus

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Yeah, if only we could have such enhacing program, like they show in CSI soap operas, i bet we could read that hidden message...
I'm not Corona Team member. Everything i say, is my personal opinion only.
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