VCD demsaicing in Krita

In the Krita Raw Importer I see a demosaicing algorithm that I have not heard of so far: VCD.
What is this? What is it good for? In as simple words and as short as possible, please.
Is it sharp? Is it soft? Is it slow? Is it fast?
What is more: I also see a dual demosaicing algorithm VCD + AHD.

Thanks in advance

Anna

This is a question that belongs in krita-artists.org forum. You should ask there.

@raghukamath might be able to answer here.
@tiar as well.

Others that aren’t Krita developers may be able to answer this too.

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Web search led me to the Color Demosaicing Using Variance of Color Differences paper.

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It’s been around for a while.

I can recall. Not bad for adoption: 2 years after the paper’s release.