A sharpener directx filter

Demone · 11th June 2002, 14:45

I was thinking about using a directshow filter that can sharpen the image and that insert between the divx codec and the videorender, and that works realtime, is it possible to do something like that, and could it be utile ?

11th June 2002, 16:15

... for sure possible and maybe even useful ... good idea !! If your CPU is strong enough of course.

Reminds me a bit of the days when Matthias Lenk was creating the DeDynamic.ax audio filter. It was done using his existing assembler code for DeDynamic and wrapped in a Dshow filter example from M$ SDK called 'gargle' ... worked first time. Anybody knows of a good sharpening filter code ( C++ ) ?

Demone · 11th June 2002, 16:32

Right
I was playing around with the filtergraph and thought at this, obviously u need a good cpu, but I remember that in photoshop and probably in a 'standard' sharpening algorithm the more u sharpen the more time consuming, so ppl should set it as low as they have no playback problems...btw with my athlon 1800 using the virtualdub sharpener its working ok...u must take into account the yuv-rgb conversion probably, but I'd like to try

Can u or anyone else help ?

Emp3r0r · 11th June 2002, 18:08

isn't this functionality already in fddshow decoder filter? It has a neat noise option too.

Demone · 13th June 2002, 08:49

Yes, but I was thinking about a stupid sharpener that can connect between the filter output and the render, so u can for example use the divx5 film effect...

Wuntvor · 13th June 2002, 09:31

The latest version of ffdshow can accept yuv2 and rgb32 input , so you can use it after the divx 5 decoder if you like to try ..

/wuntvor

Demone · 13th June 2002, 17:06

Wuntvor, it doesnt seem to work.
I tried it in graphedit and I dunno how to link it after the divx5 decoder, there must be an in between filter converter to add ?

Wuntvor · 13th June 2002, 19:37

Hmm, Im sorry, I dont really know how you're supposed to make it work, I just read that Milan has made ffdshow ta accept yuv2 and rgb24 input from other decoders, ans dince he has the sharpener effect I thought it should work..

Hmm I now read the page again and it says it accepts yuy2 and rgb24 , however the rgb24 input is in the CVS, not in the build version you can download..
I wonder what the divx5 decoder uses as format?

Anyone knows how/if one can make this work ?

ill try to play around with it, but Im really out of free time right now, so it will ta ke a while..

Heres the ffdshow homepage btw...
ffdshow homepage

regards
/wuntvor

Prosper · 21st June 2002, 05:59

Simple, in ffdshow config, check 'raw', and the renderer will automatically insert ffdshow after most decoders, eg MPEG, ASF, WMV, etc.

11th June 2002, 14:45	#1 \| Link
Demone Registered User Join Date: Nov 2001 Posts: 123	A sharpener directx filter I was thinking about using a directshow filter that can sharpen the image and that insert between the divx codec and the videorender, and that works realtime, is it possible to do something like that, and could it be utile ?

11th June 2002, 18:08	#4 \| Link
Emp3r0r Registered User Join Date: Oct 2001 Location: Alabama, USA Posts: 769	isn't this functionality already in fddshow decoder filter? It has a neat noise option too. __________________ ChapterGrabber - add names to your chapters \| AtomSite - open source AtomPub server

11th June 2002, 16:15	#2 \| Link
ChristianHJW Guest Posts: n/a	... for sure possible and maybe even useful ... good idea !! If your CPU is strong enough of course. Reminds me a bit of the days when Matthias Lenk was creating the DeDynamic.ax audio filter. It was done using his existing assembler code for DeDynamic and wrapped in a Dshow filter example from M$ SDK called 'gargle' ... worked first time. Anybody knows of a good sharpening filter code ( C++ ) ?

11th June 2002, 16:32	#3 \| Link
Demone Registered User Join Date: Nov 2001 Posts: 123	Right I was playing around with the filtergraph and thought at this, obviously u need a good cpu, but I remember that in photoshop and probably in a 'standard' sharpening algorithm the more u sharpen the more time consuming, so ppl should set it as low as they have no playback problems...btw with my athlon 1800 using the virtualdub sharpener its working ok...u must take into account the yuv-rgb conversion probably, but I'd like to try Can u or anyone else help ?

13th June 2002, 08:49	#5 \| Link
Demone Registered User Join Date: Nov 2001 Posts: 123	Yes, but I was thinking about a stupid sharpener that can connect between the filter output and the render, so u can for example use the divx5 film effect...

13th June 2002, 09:31	#6 \| Link
Wuntvor Registered User Join Date: Mar 2002 Posts: 22	The latest version of ffdshow can accept yuv2 and rgb32 input , so you can use it after the divx 5 decoder if you like to try .. /wuntvor

13th June 2002, 17:06	#7 \| Link
Demone Registered User Join Date: Nov 2001 Posts: 123	Wuntvor, it doesnt seem to work. I tried it in graphedit and I dunno how to link it after the divx5 decoder, there must be an in between filter converter to add ?

13th June 2002, 19:37	#8 \| Link
Wuntvor Registered User Join Date: Mar 2002 Posts: 22	Hmm, Im sorry, I dont really know how you're supposed to make it work, I just read that Milan has made ffdshow ta accept yuv2 and rgb24 input from other decoders, ans dince he has the sharpener effect I thought it should work.. Hmm I now read the page again and it says it accepts yuy2 and rgb24 , however the rgb24 input is in the CVS, not in the build version you can download.. I wonder what the divx5 decoder uses as format? Anyone knows how/if one can make this work ? ill try to play around with it, but Im really out of free time right now, so it will ta ke a while.. Heres the ffdshow homepage btw... ffdshow homepage regards /wuntvor

21st June 2002, 05:59	#9 \| Link
Prosper A Very Silly Person (VSP) Join Date: Oct 2001 Location: Canada Posts: 87	Simple, in ffdshow config, check 'raw', and the renderer will automatically insert ffdshow after most decoders, eg MPEG, ASF, WMV, etc.