Filter to solve the VHS contrast problem?

[fray]

Hi,

I'm looking for recommendations to solve the contrast problem
you can see in this image.


http://img70.exs.cx/img70/5800/vhs6qj.jpg (http://www.imageshack.us)

The problem is on the right side of the black legs (as well as any other very dark or very bright object)

The best method so far is to overlay the image with itself
moved two pixels to the right, but this blurs the video
too much for my taste.

Overlay(clip,clip,x=2,y=0, mode="blend",opacity=0.33)

Is there a recommended filter to fix this problems without
blurring the result too much?

[fray]

Answering my own question:

FixVHSOversharpL does a decent job on this.

Update: No it doesn't :( - see below...


No a good as the results on the site
(http://www.geocities.com/mrtibsvideo/fixvhsoversharp.html),
there's still a visible ghost.

But this is full 720x576 resolution and the homepage warns about
sizes larger then 352.

Before:
http://img55.exs.cx/img55/7667/vhs19ri.jpg (http://www.imageshack.us)

After:
http://img55.exs.cx/img55/6504/vhs29kj.jpg (http://www.imageshack.us)

Script:

ConvertToYUY2()
FixVHSOversharpL(30,12,8).FixVHSOversharp(30,14,10).FixVHSOversharp(30,14,10)

[kingmob]

well this (http://www.geocities.com/siwalters_uk/chromashift.html) filter does the same with color bleeds. Maybe it helps you, though it probably comes down to the same you're doing now already.
Also give masktools a try.

[fray]

FixVHSOversharp is not as good as it seems.

It's great on still pictures, but alas the fixed lines start to flicker: It often misses a few bright pixels. So at the current settings it's not useful.


@kingmob: the source is black and white, so color shifting can't help.
So you know where to get masktools and which filter in there could work?

The link "http://kurosu.inforezo.org/avs/MaskTools.zip" didn't work.

[yidaki]

Perhaps you could try warpsharp...
It could possibly help :)

[Mug Funky]

offtopic here...

Yidaki: is that yidaki as in didge?

[scharfis_brain]

BlindDehalo should do that job pretty well

[Chainmax]

Ditto, either it or BlindDeHalo2.

[fray]

I tried Blinddehalo2 with these values
BlindDeHalo2(video2,3.0,1.0,100,true)
but I'm not really happy.

It seems to attack the contrast on both sides (left and right), when it should only fix the contrast problem on the right. The result looks too blurred.

Instead I went back to the simpler ideas:
if I sharpen the clip after the overlay the result looks better.

Overlay(clip,clip, x=2,mode="blend",opacity=0.3).Sharpen(1.0,0)

http://img195.exs.cx/img195/6268/vhs37gu.jpg (http://www.imageshack.us)