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How to blur the eroded edge only?

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  • Real Name: Karen Johnson

How to blur the eroded edge only?

PostSun Sep 01, 2019 8:07 pm

In Fusion, I see that I can either blur (node Blur) or erode (node erode/dilate). I need to blur only those eroded edges, so the blur doesn't affect the rest. In Nuke I would use the "Erode (blur)" node, how can I achieve the same effect in Fusion. I don't mind combining several nodes.
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Re: How to blur the eroded edge only?

PostMon Sep 02, 2019 7:12 am

When it comes to Fusion I would recommend watching anything by Simon Ubsdell. His knowledge is deep.
Somewhere in this five parter is a way to do exactly what you’re asking. Isolating and edge and blurring it. It also may be under a tutorial of his, on making your own Keyer controls.
Best of luck.

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Kel Philm

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Re: How to blur the eroded edge only?

PostTue Sep 03, 2019 2:10 am

Are you talking about blurring the RGB channels, Alpha or both?


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Re: How to blur the eroded edge only?

PostWed Sep 11, 2019 5:19 pm

Try using the matte control node after the erode/dilate node. You can then blur and contract/expand the alpha only. Depending on what you are trying to achieve this may work better and negate the need for an erode node.

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