Edge Restoration Sys v1.5
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11.0, 10.5 or later
Edge Restoration System
This node is designed to decontaminate the semitransparent edges of the desired object.
It uses a standard Blur and grow technique combined with a frequency pass for restoring details.
In order to make the process work, the input image needs to be unpremultiplied and to have an alpha channel.
If the detail restoration doesn't work, it's possible to output just the colour information without any details so that you can comp that separately.
For further information check the README file.