White line problem

[Filipon]

Hello,

I'm new to Avisynth and I need your help. Here, on some cartoons, there are analog white lines (I don't know if I'm using the right term) that flicker that appear.
I would have liked to know if it is possible to make them disappear or failing that, to attenuate them?
I am attaching pictures.

Thank you.

[jagabo]

Those are analog oversharpening halos. Try dehalo_alpha(rx=3.0, ry=1.0). Adjust rx and ry to suit the size of the halos. It can be very damaging to the picture though. So it's best to avoid them in the first place.

[SaurusX]

Are you referring to the rainbowing in the thin diagonal line? That's crosstalk between the chroma and the luma. There are a few filters for AVISynth to mitigate the effect like Bifrost.

[Filipon]

Thank you for your answers !

Are you referring to the rainbowing in the thin diagonal line? That's crosstalk between the chroma and the luma. There are a few filters for AVISynth to mitigate the effect like Bifrost.

I'm referring to the kind of white spots that appear on the black line that I circled in red (see image below).
They tend to move or I don't know how to describe it every frame, hence why I attached two images in the first post.


[Attachment 63774 - Click to enlarge]

[jagabo]

Those are rainbow artifacts. They are the result of incomplete separation of the luma from the chroma of a composite signal. There are many de-rainbow filters for AviSynth.

http://avisynth.nl/index.php/External_filters#Rainbow_.26_Dot_Crawl_Removal

They generally involve blurring and/or desaturating colors near sharp edges.