Repeat edge pixels?

Hi there,

when using Fusion to blur signs and logos I have some serious problems with edge pixels.
The blurred logo starts to flicker when entering the edge area.

This is the flow

Bildschirmfoto 2018-03-16 um 11.46.40.png (15.15 KiB) Viewed 2497 times

Is there an option to repeat edge pixels like in After Effects?

If you can, share a closeup screenshot of the artifacts you're seeing at the edge of the frame. I suspect it's the same thing I ran into when I started using Fusion for match moving:

viewtopic.php?f=22&t=66289


As far as I can tell there is just some bad math in the antialiasing calculations Fusion does. Which is ironic because Resolve also has terrible antialiasing, but on a completely different code base...

I'd be happy if someone could inform me that I'm wrong and this is a workflow error, but that wasn't the impression I got when I first asked around here and on WSL.

The only real solution I came up with was to dilate around the edges with a tiny 1 or 2 pixel mask to sort of "fake" the clipping on the planar transform.

Yes, I have exactly the same issue!
But what do you mean by dilating around the edge? How do you did that?

I believe Jed has the "ErodeDilate" tool in mind.

It's one of my favorite tools

Attached a rather over-engineered example of how to fill holes and extend the edge utilizing ErodeDilate in multiple areas.

fill_hole_v001.zip

(2.83 KiB) Downloaded 117 times

I know the tool
But how to extend an edge without affecting the Image itself?

Skip the the variblur at the end of the sample. The image is not affected. You can run it though a difference for a prove.

Depending on the footage a different strategy might be better. E.g. Median (in Time).

Skip the the variblur at the end of the sample. The image is not affected. You can run it though a difference for a prove.

Depending on the footage a different strategy might be better. E.g. Median (in Time).

Can you show me a node tree?

I believe Jed has the "ErodeDilate" tool in mind.

It's one of my favorite tools

Attached a rather over-engineered example of how to fill holes and extend the edge utilizing ErodeDilate in multiple areas.

fill_hole_v001.zip

Yep, this is basically the method I use. This example is great to demonstrate how much space you can fill this way, but honestly it probably shouldn't be used for anything but tiny edge artifacts like aliasing errors. A lot of nodes to reproduce something Fusion should do automatically, but whatever...

Edit: total aside, but this is also an awesome tool to handle despill on keys with heavy motion blur...