Recommendation about good sharpener?

[Anakunda]

HI ;)

Would any body suggest me a possibly good sharpener for such a kind of source, thanks in advance for all replies.

http://img594.imageshack.us/img594/5135/33546.png

[fvisagie]

If you haven't yet, have a look at the list at http://avisynth.org/mediawiki/External_filters#Sharpeners and try some out. VariableBlur and MedianBlur elsewhere on that page also provide fairly decent Unsharp Masking sharpeners.

Edit: more correctly wrt. using MedianBlur for sharpening, see http://forum.doom9.org/showthread.php?p=1595531#post1595531 for an example.

[Anakunda]

I have tried FFT3DFilter with sharpen=1.5 and the picture is more sharp/contrast however the sharp edges already look affected.
With decent sharpen value the edges are ok but the picture remains same blurry.
aSharp seems overkill and seem to damage smooth transits within the picture.
This is hard to find an efficient filter which doesnot distort the original picture too much and at once improves the overall sharpness.
Thanks for the MedianBlur hint, I will have look at it.

[fvisagie]

I suspect your source may also benefit from a temporal degrainer before sharpening, something like TemporalDegrain or MCTemporalDenoise.

After that, in my limited experience LSFMod works fairly well on (by then hopefully) cleaner source.

A novel approach which may also work once your source is fairly clean from temporal grain is http://neuron2.net/msharpen/msharpen.html.

[Anakunda]

I suspect your source may also benefit from a temporal degrainer before sharpening, something like TemporalDegrain or MCTemporalDenoise.

After that, in my limited experience LSFMod works fairly well on (by then hopefully) cleaner source.

A novel approach which may also work once your source is fairly clean from temporal grain is http://neuron2.net/msharpen/msharpen.html.

:thanks: Are these denoiser/sharpener combos generally better on blurry sources than FFT3D with high sharpen value?
And I suppose MSharpen is mostly aimed to animated sources, right?

[fvisagie]

:thanks: Are these denoiser/sharpener combos generally better on blurry sources than FFT3D with high sharpen value?


I haven't done the comparison yet myself. However, a one-size-fits-all solution does not really exist as individual cases demand individual approaches. Normally some experimentation is required, unless you spot characteristics identical to a previous case you solved in which case you can apply the previous solution.


And I suppose MSharpen is mostly aimed to animated sources, right?

Yes, according to its documentation.

[Anakunda]

Actually I tried MCTemporaryDenoise with low settings + LSFmod with default settings which seem to produce slightly sharper picture than FFT3D with sharpen 0.4 + LSFmod defualts. Might you suggest which settings could I try to tweak on MCTemporaryDenoise and/or LSFmod to get more improvement....
For comparison

original
http://img27.imageshack.us/img27/1343/rawi.th.png (http://img27.imageshack.us/img27/1343/rawi.png)
FFT3D sharpen 0.4 + LSFmod defaults
http://img829.imageshack.us/img829/7051/fft3d04.th.png (http://imageshack.us/a/img829/7051/fft3d04.png)
MCTemporaryDenoise very low settings + LSFmod defaults
http://img18.imageshack.us/img18/8817/mctdvl.th.png (http://imageshack.us/a/img18/8817/mctdvl.png)
MCTemporaryDenoise low settings + LSFmod defaults
http://img507.imageshack.us/img507/9867/mctdl.th.png (http://imageshack.us/a/img507/9867/mctdl.png)

[fvisagie]

Great progress you've made there.

Regarding tweaks to MCTemporalDenoise and LSFMod, I have no experience of MCTemporalDenoise and have only used LSFMod when its default settings were sufficient for the source at the time.

In case you want to also try out TemporalDegrain, for heavily grained source

TemporalDegrain (degrain=3, SAD2=400)

worked well enough without additional non-defaults for me, but for your source all-default values might be sufficient.

[Anakunda]

In case you want to also try out TemporalDegrain, for heavily grained source
[CODE]

TemporalDegrain with default settings introduces very noticeable artifacts compared to FFT3D and MCTemporalDenoise. Also badly MCTemporalDenoise seems to be damn slow.
Maybe someone can suggest a faster params for MCTemporalDenoise or LSFmod with no loss or increase of quality, but not such a big matter already.
Anyway thanks.

[SeanYamazaki]

Actually I tried MCTemporaryDenoise with low settings + LSFmod with default settings which seem to produce slightly sharper picture than FFT3D with sharpen 0.4 + LSFmod defualts. Might you suggest which settings could I try to tweak on MCTemporaryDenoise and/or LSFmod to get more improvement....
For comparison

original
http://img27.imageshack.us/img27/1343/rawi.th.png (http://img27.imageshack.us/img27/1343/rawi.png)
FFT3D sharpen 0.4 + LSFmod defaults
http://img829.imageshack.us/img829/7051/fft3d04.th.png (http://imageshack.us/a/img829/7051/fft3d04.png)
MCTemporaryDenoise very low settings + LSFmod defaults
http://img18.imageshack.us/img18/8817/mctdvl.th.png (http://imageshack.us/a/img18/8817/mctdvl.png)
MCTemporaryDenoise low settings + LSFmod defaults
http://img507.imageshack.us/img507/9867/mctdl.th.png (http://imageshack.us/a/img507/9867/mctdl.png)

Actually, could post what settings you used for each of those? I'm just curious because I haven't had much luck with MCTD for the amount of time it adds to a compression.

[Anakunda]

Actually, could post what settings you used for each of those? I'm just curious because I haven't had much luck with MCTD for the amount of time it adds to a compression.

Yep I can - MCTemporalDenoise(settings="low") + LSFmod()
but not to be mistaken. I compared one screen only. After encoding the whole video with this I realized it's actually not better than FFT3D with some higher sharpen (although the difference is only visible in zoomed it lacks a bit more details that FFT3D retains), moreover I didnot like considerable picture changes made with MCTD with settings medium and higher thus so far it looks that FFT3D with some higher sharpen factor is still best choice as for lowest objects altering and detail loss.