Lines on the edges of suits

baka1 · 24th March 2021, 14:27

https://mega.nz/file/vKhB2QKB#p9yDRd...BzWnVC723Y7YhA

So I thought it was a halo or ringing - DeHalo_alpha and HQDering doesn't do anything. Nor does antialiasing filter. Given it's on the edges - I'm thinking the solution has to be mask-related.

Selur · 25th March 2021, 15:31

It's an anime, shouldn't there be lines at the edges of suits and basically anything?
You might want to share a screenshot in which you mark what is bothering you.

baka1 · 26th March 2021, 08:38

It's not an anime - hopefully the red circles help with identifying the weird edges

Emulgator · 26th March 2021, 09:22

Sharpening halos along transients.
You may use convolution to compensate that.

baka1 · 26th March 2021, 11:02

Hmm defining the matrix is more fiddly than (most) other Avisynth filters - this will be fun!

Emulgator · 26th March 2021, 12:53

I just made such a pair of compensation kernels for positive/negative gradients with more than -+10 taps horizontally.
Worked nicely here for the huge ghosting halos of an aged CCD Handycam.

But indeed it takes lots of time to handmatch so many taps.
In your case I guess -+1 to -+4 taps might do.

Hmm, now that I have downloaded and examined your source video:
Only the cuts of the arrival scene cam have it, the artifacts don't follow the contours perfectly,
rather form exact vertical colums, as seen with an uprezzed shot from a poor cam.

Another cam fault: echo trails of lefthand bright parts (outside handrail run and floor) propagating to the right,
visible as pale overlay over dark content decaying by (1-1/e) after 10 to 90% of frame width (lady's black gown, men's dark suits).

Often seen fault, let's make a script to compensate that !
Or is there a plugin already ?

The other cam's close-to-face cuts do not exhibit the first fault in that depth,
but the second (rightbound bright trails), although to a lesser degree (white handkerchief)

Maybe a different approach is needed here.

Hotte · 26th March 2021, 14:46

@Emulgator, to be honest I do not understand what you are talking about. Is there a tool, sth to try out ? Huge ghosting halos is sth I am also really interested in any best practise.

Emulgator · 26th March 2021, 18:28

https://forum.doom9.org/showthread.p...50#post1939150

baka1 · 27th March 2021, 00:40

@Emulgator, I wasn't able to use the script above. But I did find a simpler script in your other posts.

Code:

string1 = string(" 0 -20 28 -32 36 36 128 128 72 -56 12 12 -4 ")
mt_convolution(horizontal=" "+string(string1)+" ", vertical=" 1 ", u=3, v=3)

https://slow.pics/c/eaDayoF0 - before (top), after (bottom)

So the left-sided halos are removed really well - just the right-sided ones and it doesn't seem like the overall picture has been softened/blurred.

24th March 2021, 14:27	#1 \| Link
baka1 baka1 Join Date: May 2020 Posts: 31	Lines on the edges of suits https://mega.nz/file/vKhB2QKB#p9yDRd...BzWnVC723Y7YhA So I thought it was a halo or ringing - DeHalo_alpha and HQDering doesn't do anything. Nor does antialiasing filter. Given it's on the edges - I'm thinking the solution has to be mask-related.

25th March 2021, 15:31	#2 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	It's an anime, shouldn't there be lines at the edges of suits and basically anything? You might want to share a screenshot in which you mark what is bothering you. __________________ Hybrid here in the forum, homepage

26th March 2021, 09:22	#4 \| Link
Emulgator Big Bit Savings Now ! Join Date: Feb 2007 Location: close to the wall Posts: 1,545	Sharpening halos along transients. You may use convolution to compensate that. __________________ "To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain) "Data reduction ? Yep, Sir. We're that issue working on. Synce invntoin uf lingöage..."

26th March 2021, 12:53	#6 \| Link
Emulgator Big Bit Savings Now ! Join Date: Feb 2007 Location: close to the wall Posts: 1,545	I just made such a pair of compensation kernels for positive/negative gradients with more than -+10 taps horizontally. Worked nicely here for the huge ghosting halos of an aged CCD Handycam. But indeed it takes lots of time to handmatch so many taps. In your case I guess -+1 to -+4 taps might do. Hmm, now that I have downloaded and examined your source video: Only the cuts of the arrival scene cam have it, the artifacts don't follow the contours perfectly, rather form exact vertical colums, as seen with an uprezzed shot from a poor cam. Another cam fault: echo trails of lefthand bright parts (outside handrail run and floor) propagating to the right, visible as pale overlay over dark content decaying by (1-1/e) after 10 to 90% of frame width (lady's black gown, men's dark suits). Often seen fault, let's make a script to compensate that ! Or is there a plugin already ? The other cam's close-to-face cuts do not exhibit the first fault in that depth, but the second (rightbound bright trails), although to a lesser degree (white handkerchief) Maybe a different approach is needed here. __________________ "To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain) "Data reduction ? Yep, Sir. We're that issue working on. Synce invntoin uf lingöage..." Last edited by Emulgator; 26th March 2021 at 13:43.

26th March 2021, 14:46	#7 \| Link
Hotte Registered User Join Date: Oct 2014 Posts: 209	@Emulgator, to be honest I do not understand what you are talking about. Is there a tool, sth to try out ? Huge ghosting halos is sth I am also really interested in any best practise. Last edited by Hotte; 26th March 2021 at 14:51.

26th March 2021, 08:38	#3 \| Link
baka1 baka1 Join Date: May 2020 Posts: 31	It's not an anime - hopefully the red circles help with identifying the weird edges

26th March 2021, 11:02	#5 \| Link
baka1 baka1 Join Date: May 2020 Posts: 31	Hmm defining the matrix is more fiddly than (most) other Avisynth filters - this will be fun!

26th March 2021, 18:28	#8 \| Link
Emulgator Big Bit Savings Now ! Join Date: Feb 2007 Location: close to the wall Posts: 1,545	Have fun with it ! https://forum.doom9.org/showthread.p...50#post1939150 __________________ "To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain) "Data reduction ? Yep, Sir. We're that issue working on. Synce invntoin uf lingöage..." Last edited by Emulgator; 27th March 2021 at 11:30. Reason: Opened a separate thread about it

27th March 2021, 00:40	#9 \| Link
baka1 baka1 Join Date: May 2020 Posts: 31	@Emulgator, I wasn't able to use the script above. But I did find a simpler script in your other posts. Code: string1 = string(" 0 -20 28 -32 36 36 128 128 72 -56 12 12 -4 ") mt_convolution(horizontal=" "+string(string1)+" ", vertical=" 1 ", u=3, v=3) https://slow.pics/c/eaDayoF0 - before (top), after (bottom) So the left-sided halos are removed really well - just the right-sided ones and it doesn't seem like the overall picture has been softened/blurred.