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Old 18th November 2018, 23:02   #221  |  Link
Argaricolm
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Well my goal so far is to just rewrite it in C++ so we have source and x64.
I want to use StaxRip with it. But StaxRip is x64 now.
Already started to do it.
So far I can tell that there is an error in documentation.
Version 1.8.7 has mode = 1 by default.
As stated in docs for 1.8.6:
starting from 1.8.5 version:
- new mode (mode = 2), which is using float precision for some calculations (best quality, now mode = 2 as default)
But in code it is 1:
Code:
.text:10011944                 mov     eax, 1
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Old 3rd January 2019, 21:30   #222  |  Link
SteveT
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Halo effect around objects on bright background

I recently discovered HDRagc and have been using it on various videos from 16mm film. It's been great, but today I encountered a clip that yields a light colored halo around dark objects positioned on a bright background as shown in the attachment.

Name:  Halo effect with HDRagc.JPG
Views: 646
Size:  64.7 KB

I have HDRagc setup with:

HDRAGC(coef_gain=5.0, max_gain=9.0, min_gain=1.0, coef_sat=1.0, max_sat=9.0, min_sat=0.0, corrector=0.8, black_clip=0.000, avg_window=15, protect=2, shift_u=0, shift_v=0, reducer=0.0,avg_lum=128)

I typically use the corrector at 1.0. I set it to 0.8 to enhance the halo effect so it shows up more clearly in my attached picture.

I have tried various settings to get rid of the halo. I set corrector above 1.0 which reduces halo but oversaturates the white background. Turning protect on and off had no effect. Any idea why the halo appears and what to do about it?

Thanks,
Steve
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Old 15th February 2019, 01:13   #223  |  Link
metaspirit
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Hdragc aura

Hey it is possible the aura is caused by 2 sharpening filters if you add a blur this could solve the problem have a try.

example

#
Lanczos4Resize(1280,720) # Lanczos4 (Sharp)
#
Blur(0.40)
#
asharp(1.25,6,-1,false)
#
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Old 25th March 2020, 12:53   #224  |  Link
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@Argaricolm: any update regarding a rewrite and a 64bit version?
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Old 25th May 2020, 06:24   #225  |  Link
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Quote:
Originally Posted by Selur View Post
@Argaricolm: any update regarding a rewrite and a 64bit version?
Hello,

An update would be really great.

Do you have a dominant redness problem on your videos ?

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Last edited by frencher; 25th May 2020 at 17:14.
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Old 27th May 2020, 10:20   #226  |  Link
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it's better when the snow is white
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Old 27th May 2020, 19:00   #227  |  Link
StainlessS
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Mournir, much better, but looks a little bit cyan-ish to me, little bit too much red removed [but my eyes are lousy].
Anyway post you mod for OP.
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Old 27th May 2020, 20:35   #228  |  Link
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i used gimp's levels filters with manual selection for the white/gray/black
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Old 1st June 2020, 07:23   #229  |  Link
Selur
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Sadly the plugin gives an Access Violation when using Avisynth 3.6.
Any hope for an update of this plugin?
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Old 1st June 2020, 11:40   #230  |  Link
kedautinh12
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Quote:
Originally Posted by Selur View Post
Sadly the plugin gives an Access Violation when using Avisynth 3.6.
Any hope for an update of this plugin?
Can you use with 3.6.1 test 4??
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Old 1st June 2020, 14:51   #231  |  Link
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I thought I'de try in GamMac, see what happens.
Code:
SHOW=False
RedMul1=1.00
RedMul2=1.06
LockChan1=1
LockChan2=LockChan1
Scale1=2
Scale2=Scale1

O = Imagesource(".\Halo effect with HDRagc.JPG")#.Crop(3,5,-6,-7)
M = Imagesource(".\2005271449230088.jpg")#.Crop(3,5,-6,-7)
G1= O.Gammac(Th=1.0/256,LockChan=LockChan1,Scale=Scale1,dc=O.Blur(0.2),redmul=REDMUL1,show=SHOW)
G2= O.Gammac(Th=1.0/256,LockChan=LockChan2,Scale=Scale2,dc=O.Blur(0.2),redmul=REDMUL2,show=SHOW)

O = O.subtitle("Original")
M = M.subtitle("Mournir")
G1= G1.subtitle("Gammac_1")
G2= G2.subtitle("Gammac_2")

T=stackHorizontal(O,M)
B=stackHorizontal(G1,G2)
StackVertical(T,B)
There is a white border thing around edge, but gamMac default is 20 pixels ignored around all borderrs, so we dont need to crop.

click to enlarge


As still a bit cyan-ish, applied a red multiplier, not as bright as Mournir, but a bit more balanced prior to maybe tweak by hand.
There seems to be some kind of halo or aura around the little girl (extending far from her - see it best in original pic).

EDIT: You could eg add args omin=5 omax=250 to gammac args to leave some tweaking lee-way [default is 0, and 255]
EDIT: Maybe back-off on the redmul a bit, maybe Gammac2 looks too red again.
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Last edited by StainlessS; 1st June 2020 at 19:34.
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Old 3rd June 2020, 14:28   #232  |  Link
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Quote:
Originally Posted by kedautinh12 View Post
Can you use with 3.6.1 test 4??
On my Core i5 Thinkpad with Win7-64 it crashes under AVS+ 3.61 test version 4, but it runs without problems under test version 2.
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Old 3rd June 2020, 22:13   #233  |  Link
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Test version 5 also does not like HDRAGC, need to revert to test version 2.

//EDIT//
The brand new 3.6.1 test version 6 handles HDRAGC with flying colors, and I also did not find any older CPP 2.5 plugins which would cause crashes.

Last edited by manolito; 4th June 2020 at 20:17.
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