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Re: [OM] CSI level image processor

Subject: Re: [OM] CSI level image processor
From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
Date: Sat, 11 Feb 2023 00:40:14 +0800
Thanks for the samples, Moose. Topaz Photo AI technically looks very much like the Codeformer and GFPGAN I'm playing with. There are certainly lots of room for improvement but when it works, the result is just brilliant. I have hundreds of old images run through both Codeformer and GFPGAN, around 90% of image works better with Codeformer and 10% works better with GFPGAN. For the one with trouble I fix them in post processing and sometimes pre-processing is required.

With normal sharpening tool (including Topaz Sharpen AI) the result is much coarser. I think the future is Photo AI, it just need more time to improve.


On 10/2/2023 17:41, Moose wrote:
I've been messing about with this. My interest is in how this tool compares to those I already have.

First example. <http://www.moosemystic.net/Gallery/tech/Process/ColdFormer/FaceRecovery1.htm>

This is my elder son and his elder daughter 10 years ago, Christmas 2002. My first digicam, 1.9 MP Canon S110 P&S.

Photo AI does pretty well with Ella, cleans Eric up too much. Subtly changes both noses, but not enough to worry about. Two rounds of Topaz Sharpen AI, with different settings does, to my eye, slightly better than Photo. With hand clean-up of tongue reflection and red-eye, it's a huge improvement over the original.

CodeFormer, at the default W-0.5 does some serious damage to the people. All new eyes, a larger nose, puffier cheeks and, mistaking the saliva on tongue reflection of a tooth, gives her a whole new lower set of teeth. Eric's nose, mouth and eyes are all changed a lot. W= 1.0 is less drastic, but still off.

This round to Topaz Sharpen AI


The flurry of posts, crossing each other left what may be some mis-impressions

Topaz Sharpen AI has 11 different modes, with settings within each. With the four-up comparison view, it's possible to home in on the best. Using it on images from one's well know cameras and lenses makes it much easier. The Auto settings are poor. It requires some active participation for decent results.

Code Former ONLY works on faces. The other processing you see from this tool are by another set of code.

Topaz Photo AI is new, and in flux, with frequent updates. Like CF, it pays special attention to faces, but doesn't alter their basic details. It also selects an overall 'subject' to work on. In the current and last versions, leaving this feature on results in a slight offset of the selected area from faces and background. I imagine that will go away.

More to Come Moose

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