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Processing times for Topaz Sharpen AI
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Mar 15, 2019 13:17:34   #
tomcat
 
JimH123 wrote:
I gave CPU a try, but found it slower than GPU. I tend to think that this is going to vary between different PCs. My GPU is NVIDIA GeForce GTX 970 with DirectDraw Acceleration, Direct3D Acceleration and AGP Texture Acceleration all Enabled. The PC is 3.6GHz and has 8 cores and 16GB of RAM.

Tried it multiple times and GPU is always faster. But I should add that overall, the speed of processing still takes a long time.

Something else I tried was to take an image with lots of noise. What I found was that using Sharpen AI produced a result that I did not like as much as what I got using DxO Photolab 2.2 Elite with Prime Noise Removal. The difference was considerable. What I also found was that if I only used the default amount of Prime Noise Removal, I could then process the resultant image with Topaz AI Clear or Sharpen AI with decent results. But if I pushed the DxO Prime Noise Removal and then went to Topaz AI Clear or Sharpen AI, I tended to see artifacts in the final image.

Currently, I am finding that I like Topaz AI Clear more than Sharpen AI.

Sharpen AI seems to work as a last attempt effort to recover an image with obvious flaws such as shake and focus. But I am not finding it useful as something needed for images that don't have problems.
I gave CPU a try, but found it slower than GPU. I... (show quote)


I was getting ready to reply and then you answered your own concern. Sharpen AI is not for noise reduction, so you will see not-so-happy results if you use it on noisy images. And that's what you discovered. You need to run AI Clear first to rid the noise and then use Sharpen AI. I like AI Clear a lot. Sharpen AI is not a miracle clear and if the image is really OOF or has shake, then it probably will not work well.

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Mar 16, 2019 03:53:38   #
JimH123 Loc: Morgan Hill, CA
 
tomcat wrote:
I was getting ready to reply and then you answered your own concern. Sharpen AI is not for noise reduction, so you will see not-so-happy results if you use it on noisy images. And that's what you discovered. You need to run AI Clear first to rid the noise and then use Sharpen AI. I like AI Clear a lot. Sharpen AI is not a miracle clear and if the image is really OOF or has shake, then it probably will not work well.


Here is an example using Sharpen AI (Stabilize) to show what it is capable of doing. Of course, I had to search to find a suitable image to try this with. This is a 100% view and I have the before and after view in Lightroom turned on so you can see the difference. I also have the problem that the birds like to eat these tiny berries, and as a result, I find hundreds of little trees growing all over my yard.

I really like Topaz AI Clear as it works great with very little effort. But in careful comparisons, Sharpen AI seems to do a tiny bit better when carefully used. But with Sharpen AI, you do need to decide whether the image needs sharpening, or stabilization or focus help. According to topaz's web site, if you want to use 2 or 3 these choices, you need to call the application more using one at a time.

And yes, if there is a lot of noise, AI Clear takes care of noise better than Sharpen AI. But it also appears that DxO Photolab Elite Prime Noise Removal seems to do even better on noise. But I am still trying to convince myself.

But it does look like these tools are really becoming much more powerful than anything we have seen before. In the case of Sharpen AI, you do need to try all three, sharpen, stabilize and focus, to see which one does the best.


(Download)

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Mar 16, 2019 09:08:28   #
tomcat
 
JimH123 wrote:
Here is an example using Sharpen AI (Stabilize) to show what it is capable of doing. Of course, I had to search to find a suitable image to try this with. This is a 100% view and I have the before and after view in Lightroom turned on so you can see the difference. I also have the problem that the birds like to eat these tiny berries, and as a result, I find hundreds of little trees growing all over my yard.

I really like Topaz AI Clear as it works great with very little effort. But in careful comparisons, Sharpen AI seems to do a tiny bit better when carefully used. But with Sharpen AI, you do need to decide whether the image needs sharpening, or stabilization or focus help. According to topaz's web site, if you want to use 2 or 3 these choices, you need to call the application more using one at a time.

And yes, if there is a lot of noise, AI Clear takes care of noise better than Sharpen AI. But it also appears that DxO Photolab Elite Prime Noise Removal seems to do even better on noise. But I am still trying to convince myself.

But it does look like these tools are really becoming much more powerful than anything we have seen before. In the case of Sharpen AI, you do need to try all three, sharpen, stabilize and focus, to see which one does the best.
Here is an example using Sharpen AI (Stabilize) to... (show quote)


Great illustration. Thanks for sharing!!

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