Sharpening with Diffuse or Sharpen vs older methods

[kofa (István Kovács)]

I didn’t notice that. However, let’s see if @Aliks can edit the original post to use the same input for both methods.

[Aliks]

I keep all my processed images in Digikam (better tagging, easier to scroll through etc) so I had overwritten the original rough nonD&S processing.

However, its easy enough to recreate, and I have replaced the previous image so the comparison right at the start of the thread should now be fair.

[foto (Syv)]

@Aliks

Yes the DoS presets stack well, but according to the manual the order can be quite significant, so they want the following sequence:

from the manual page:

" 1 denoise,
2 local contrast enhancement,
3 dehaze,
4 lens blur correction,
5 sensor and demosaic correction.

I have an dog image with motion blur, taken at only 1/350s.

My standard was to:

1. d&s: dehaze
2. d&s: sharpen with opacity around 60%

I just did as you mentioned. Here’s a screen capture of the 2 compare with geeqie.

WOW!, What a difference! Thanks

Now, something that I have noticed is that 4.2.0 is slower than 4.0.1 and was slower than 3.8. This took 34 seconds to export in 4.2

I do NOT have useful gpu. I now have a laptop with an amd ryzen 4700 + some gpu and opencl installed but there is not enough memory dedicated to the gpu (only 512mb), so dt does not recognize it.

[Dave22152 (Dave Goldberg)]

@Soupy

Since I started using the details threshold mask on d&s instances (deblur or dehaze) I run into way less trouble with noise. Never need to use d&s for noise reduction any more. Details threshold usually set to 20-30.

I’ve used the details threshold mask both ways. I’ll mask out area of high detail when denoising to emphasize broad regions like water and sky and then do the opposite to address fine details like fur and feathers. That way I can be a more agressive with noise reduction with less need for sharpening.