Here is LimitedSharpen()

[Socio]

I found a glitch in the new LS script on this line:

\ : Smode==2 ? sharpen(float(strengthH)/100.0,float(strengthV)/100.0)

I changed strengthH to just strength and it seems to work just great.

Didee to you recommend keeping the "strengthV" setting the same as the "strength" setting i.e

LimitedSharpen(ss_x=1.2,ss_y=1.2,Smode=2,strength=40,strengthV=40)

[Didée]

Ah, indeed. Thanks for spotting it, Socio. The previous link now points to a corrected version.

Unless specified otherwise, "strengthV" defaults to the setting for "strength", i.e. normal symmetrical sharpening. The scenarios for asymmetrical sharpening are those mentioned by Mug Funky: mostly for analog sources, perhaps for anamorphic sources, or perhaps when blowing non-anamorphic up to anamorphic. For VHS sources, Smode=0 with radius=1.5~3.0 and radiusV=~1.0 could be a good way ... except for if horizontal oversharpening is already present, but that's another story.


Then, in reverse chronological order:


@ Mug Funky:
You meant Smode=3, didn't you? Yes, this one could be made working asymmetric, too. But that indeed requires MaskTools 2.0 ... it could be done with 1.5.x also, but would be rather slow. Plus, for that Smode it would (will) most likely be horizontal-only and vertical-only sharpening. Producing a weightened version for that one is not trivial, and probably not worth the effort.


@ Chainmax:
Soothe will not be implanted into LimitedSharpen. Applying Soothe is easy enough, isn't it.
Something with integrated Soothing is in the works ... but it's not LimitedSharpen.


@ foxyshadis:
Thanks for the service.
Seems like I'll have to revise the documentation anyways, so let's wait for that.


@ Clouded:
To whom do you apologize - to me?? Wrong address, as I live in the glass house - making announcements, then let people wait 'til they're blue in the face ...
However, if some of the "support" filters could work on chroma too, it would help indeed. (Top ranking: the "difference" filters.)


@ Isochroma:
Fine if you like LimitedSharpen, but no way to accord me money for it.


***

Happy Xmas everyone - have a good time.

***

[JarrettH]

Noob entering =p

I'm having some trouble with it. I know I set it up correctly, and results may vary based on signal quality, etc. When I view using GAM the image looks very pastel like, almost cartoonish at medium distance. Up close everything is COMPLETELY smoothed, at medium distance it's cartoonish looking like I said and very aliased as if I were viewing some low quality movie in full screen.

I'll post shots later, werk time =p

[JarrettH]

is resizing really necessary when i'm following the tv limited sharpen guide?

[Didée]

JarretH:
Please post the parameters you're calling LimitedSharpen with. Also before/after screenshots could help.

Posterization and aliasing is likely to happen with ultra-high values for "strength", or generally when "strength" is set too high for the chosen supersampling factor. If you're using no supersampling (ss_x=1.0 & ss_y=1.0), then aliasing will show up with much lower strength settings already. When no supersampling is used, Smode=4 might be better suited than the others, because of its non-linear response.
The "soft" parameter will help on all Smodes to prevent or reduce the introduction of aliasing and posterization.

[JarrettH]

Hey Didee

Are you referring to this?

Import("C:\Program Files\AviSynth 2.5\plugins\Soothe.avs")
Import("C:\Program Files\AviSynth 2.5\plugins\LimitedSharpen.avs")

SetMTMode(2)
mergeluma( removegrain(4,-1), 0.75 )
dull = last
sharp = dull.LimitedSharpen(ss_x=1.0,ss_y=1.0,Smode=4,strength=100,soft=33)
mergeluma( removegrain(2,-1), 0.25 )

Soothe( sharp, dull, 20 )

I hope it's correct...I was just trying to follow some of the advanced options

Is there a way I can check if it's hyperthreading? I didn't see two processes using half/half cpu. I'm still tweaking what I like. Been doing some tests on foodtv

I could never figure out how to take captures with GAM.

[foxyshadis]

Using a tool like process explorer (from sysinternals) you can check the cpu usage of each thread; there should be two threads that each take ~50%.

[Didée]

Could be caused by RemoveGrain. Especially the first one (merge 75% of RG mode4) for my taste is too strong. Comment out both the lines with MergeLuma(RemoveGrain(..)..), and see if it looks better then.

Note: I had suggested those MergeLuma(Removegrain...) thingies to Socio for realtime processing because this works very fast. For "real" processing, I'd rather recommend SPresso. Takes somewhat more processing power, but it's more efficient, doing less harm.

[JarrettH]

Import("C:\Program Files\AviSynth 2.5\plugins\LimitedSharpen2.avs")

SetMTMode(2)
LimitedSharpen(ss_x=1.0,ss_y=1.0,Smode=3,strength=50,overshoot=7)

I copied that from the tv guide. Is LimitedSharpen2.avs a typo? It should just be LimitedSharpen.avs right? I still don't see two processes anyway.

[JarrettH]

I think changing to smode=4 and setting the res to 640x480 solved it. For some reason the res setting was only available using a certain skin theme in GAM.

[Socio]

Originally Posted by JarrettH

I copied that from the tv guide. Is LimitedSharpen2.avs a typo? It should just be LimitedSharpen.avs right? I still don't see two processes anyway.

Yes Limitedsharpen2 is a typo, should be just LimitedSharpen.avs

[JarrettH]

I think I settled on this

Import("C:\Program Files\AviSynth 2.5\plugins\Soothe.avs")
Import("C:\Program Files\AviSynth 2.5\plugins\LimitedSharpen.avs")

SetMTMode(2)
mergeluma( removegrain(4,-1), 0.70 )
dull = last
sharp = dull.LimitedSharpen(ss_x=1.0,ss_y=1.0,Smode=4,strength=100,soft=33)
mergeluma( removegrain(2,-1), 0.25 )

Soothe( sharp, dull, 20 )

I have to play with pictures properties now. Are there any other methods I might use to increase television quality? I noticed the audio clipped every now and then and the picture isn't quite as fluid. It doesn't look like hyperthreading is functioning when I open the processes.

Thank you Didée for the great idea of LimitedSharpen !
Since It might become a common tool like sharpen, resize etc..
(and it should) People are gonna use it very often. So instead of
scripting, what about writing a plugin just for speed's shake?

[Backwoods]

Originally Posted by Neil Lee

So instead of scripting, what about writing a plugin just because I think there would be a speed increase but we all know it doesn't

Fixed.

Originally Posted by Backwoods

Fixed.

You can try to be a smartASS, but don't forge other's quote
If you think my point is wrong, just say it with you own words.

It's one thing to be sarcastic, another to forge someone's post.

.

[foxyshadis]

Clouded already did profiling a few pages back and used it to filterize the slowest and hardest hit luts; his half-and-half variation probably includes 80-90% of the speedup of moving to fully optimized C/asm. A good coder must pick one's battles.

However, I just noticed clouded forgot to modify his script to use MakeDiff/SubtractDiff, so you might give the edited version a whirl. (I'll add the latest mods whenever people think they're stable.) The affected lines are:

sharpdiff=MakeDiff(tmp,last)
sharpdiff2=mt_lutxy(sharpdiff,sharpdiff.removegrain(19,-1),
 \           "x 128 - abs y 128 - abs > y "+AMNT+" * x "+AMNT2+" * + 100 / x ?")

soft==0 ? last : SubtractDiff(tmp,sharpdiff2)

[Backwoods]

Originally Posted by Neil Lee

You can try to be a smartASS, but don't forge other's quote
If you think my point is wrong, just say it with you own words.

It's one thing to be sarcastic, another to forge someone's post.

.

Hey buddy it was a joke. It was brought up before and in other threads where scripts are used. We're all video buddies here, no reason to fly off the handle.

[JarrettH]

completely random, but I finally figured out how to frameserve with avisynth to vdub...hooray no more vfapi

[Socio]

Originally Posted by foxyshadis

Clouded already did profiling a few pages back and used it to filterize the slowest and hardest hit luts; his half-and-half variation probably includes 80-90% of the speedup of moving to fully optimized C/asm. A good coder must pick one's battles.

However, I just noticed clouded forgot to modify his script to use MakeDiff/SubtractDiff, so you might give the edited version a whirl. (I'll add the latest mods whenever people think they're stable.) The affected lines are:

sharpdiff=MakeDiff(tmp,last)
sharpdiff2=mt_lutxy(sharpdiff,sharpdiff.removegrain(19,-1),
 \           "x 128 - abs y 128 - abs > y "+AMNT+" * x "+AMNT2+" * + 100 / x ?")

soft==0 ? last : SubtractDiff(tmp,sharpdiff2)

I tried the version at your link and I get an error " There is no function named MakeDiff " ?

[psme]

The MakeDiff version needs the latest support dll here:

http://people.pwf.cam.ac.uk/mg262/po...t_03Dec05B.dll

regards,

Li On