Denoise "sharpening" artifacts with strong color lines

I’ve noticed if an image has an extra vibrant thin line on a vibrant colored background, denoising will often create artifacts that look like the image have been over-sharpened. If I turn sharpening off, the artifacts remain. If I turn denoising down, the artifacts will sometimes reduce, but are still apparent. The only way I’ve been able to work around this is to mask the problem areas with the preserve text tool, but this isn’t a good solution. I photograph a lot of race cars, and they often have vibrant colors with many thin lines and swirls, and masking all that out is very time consuming.

I have to work with these as tiff files in Photo AI, and currently on 2.1.4. Is this something I can work around more easily? I tried doing this directly on the RAW file, but there wasn’t much of a difference and it creates issue elsewhere in my workflow doing Photo AI first.

It’s most apparent along the green line on the top of the body.

Here it is most noticeable along the magenta lines, but also along the other black and silver lines right of the preview divider.

Would you mind sending in some more information to get a better understanding of the problem you are having with this particular type of image? Please send the following information:

  1. The original image file.
  2. The processed image.
  3. A screenshot or description of the settings panel so I can see what adjustments were turned on.

You can securely submit your image(s) to my Dropbox using the link below.

Dropbox File Request

Please be sure to send me a note to let me know you sent something.

For the original file, are you referring to the raw file, or the edited tiff I’m actually importing into Topaz?

The RAW file and TIFF file would be helpful for further investigation.

If you would like, please take a screen recording of this behavior so I can see exactly what is happening.

Loom is a great free application for this: Loom | Free Screen & Video Recording

I uploaded the files. There is a copy of the raw files, the initial Raw Therapee based edit prior to Photo AI, then a PhAI edit. The Chicago Rush dragster did not make use of the preserve text workaround because I didn’t know about it at the time. The Jr. dragster is making use of the preserve text masking and has a better final result.

If you need me to make a recording, I will. I just didn’t have the time to do it tonight.

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Thanks for sending in those files.

I’d like to get a better understanding of the machine you are using where this problem is occurring.

Please send me your system profile information so I can check if your computer hardware is up to date.

You can securely submit your files(s) to my Dropbox using the link from this thread.

Please be sure to send me a note here to let me know you sent something.

System info is now uploaded. I also uploaded a video of this in action. It’s a 4k monitor, but I downscaled it to 1080p to save space. There’s some loss of quality there, but I think you should still be able to see what’s going on well enough.

Thanks for sending in that information.

I want to see if updating your GPU driver will resolve the problem, as there is a more up-to-date driver that has been released.

Please use the following link to update your driver: AMD | Driver Update

After the update, let me know if you are still experiencing the problem.

I have tried updating the driver recently, to both of the two versions above my current one, but they are bugged to the point that I can not even start my most used game. Unless and until that is fixed, this is the most stable driver for me. For what it’s worth, this issue has been going on for some time now, across multiple prior driver versions. I have my doubts that would fix it at this point. Even if it did, I don’t want to have to keep swapping drivers back and forth depending on what programs I’m using.

Just wanted to update you that I think I got that game crashing issue fixed and updated to AMD graphics driver 24.7.1 (the latest as of right now). I tested this out again and I’m not seeing any change in the artifact results.

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