I come from Krita (still I am using it to animate some short sequence, then I use Natron to build bigger things)
On Krita you have filters like the Cross-Channel Adjust Filter to (for example) turn lightness to alpha using a curve:
I combine that filter with a Gaussian Blur to produce some basic Bloom effect
Since I discovered that Natron is much more efficient on handling frame information and massive image filtering compared to Krita (Krita is mainly oriented to be a poweful illustration software rather than complex animation tool) and also my workflow needs to combine image sequence sources on Natron, I stopped the application of Bloom from Krita and now I am trying to do the same on Natron
AFAIK, Natron offers lot of nodes that are supposed to be some “Bloom” filter or similar:
- Under “Filter => Bloom”
- Under “GMIC => Degradations => G’MIC Blur Bloom”
- Under “GMIC => Artistic => G’MIC Highlight Bloom”
And also there is some shader called HDR Bloom, it seems more or less like the thing I was looking for but (perhaps it’s just my case) the shadertoy is very unstable and lead to easy crashes
What I am actually searching for is some way to build the same bloom I was using before, using nodes/filters/plugins on Natron (like for example, turning the dark pixels into alpha using some node before applying gaussian blur to the result)
OR…
Using some plugin that applies that simple bloom (just like some threshold plus a blur or something)
I hope my question is clear, otherwise I can provide visual samples
