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Feature wish: Convolution Sharpening

PostPosted: Wed Jun 13, 2018 8:58 am
by AndreasOberg
Hiya,

I have done a lot of tests with sharpening of late. The best result I got was by
- First using Convolution Sharpening. This sharpening can "fix" out of focus areas and also increase sharpness in general
- Secondly using Frequency Sharpening. Neat Video for example.

I have not been able to find a way of doing convolution filtering in Davinci. Premiere has a simpler version built in but it would be nice if Davinci made an even more powerful version.

You get the best quality by using an algorithm called Adaptive Richardsson-Lucy Convolution Sharpening.
There is an article with image examples here:
http://www.clarkvision.com/articles/image-restoration2/

Would be great if we could have such powerful sharpening in Davinci.
Best wishes,
Andreas

Re: Feature wish: Convolution Sharpening

PostPosted: Wed Jun 13, 2018 10:29 am
by Uli Plank
Did you play with the sharpening in the new "Super Scale" function?

Re: Feature wish: Convolution Sharpening

PostPosted: Wed Jun 13, 2018 12:59 pm
by AndreasOberg
That sounds useful. Does it also work when you do not rescale footage? I will be sure to check it out.
/Andreas

Re: Feature wish: Convolution Sharpening

PostPosted: Wed Jun 13, 2018 4:07 pm
by Uli Plank
If it doesn't, have a look at the New Continuum Magic Sharp Filter, you can buy that alone without the whole Continuum. It works well in Resolve.

Re: Feature wish: Convolution Sharpening

PostPosted: Wed Jun 13, 2018 4:19 pm
by Dermot Shane
Did you try Paul Dore's "frequency seperation" OFX?

Re: Feature wish: Convolution Sharpening

PostPosted: Wed Jun 13, 2018 10:26 pm
by AndreasOberg
Uli Plank wrote:If it doesn't, have a look at the New Continuum Magic Sharp Filter, you can buy that alone without the whole Continuum. It works well in Resolve.


Hiya, this looks really interesting. Just bought a copy, will check it out.
/Andreas

Re: Feature wish: Convolution Sharpening

PostPosted: Thu Jun 14, 2018 2:59 am
by Rohit Gupta
There are Sharpen tools in Resolve FX. Please check them out! Studio version only I think, but I presume you have that.

Re: Feature wish: Convolution Sharpening

PostPosted: Thu Jun 14, 2018 8:59 am
by AndreasOberg
Rohit Gupta wrote:There are Sharpen tools in Resolve FX. Please check them out! Studio version only I think, but I presume you have that.


Hi Rohit. Yes I have tried the ones in 14 Studio. They are nice but I could not get the same result as with convolution filter in Image Plus that I use for photos for example. What method are they based on?
The Magic Sharp Filter plugin gave really nice results. Paul Dore's plugins seems really interesting as well.
/Andreas