I actually ended up writing a plugin to do this, though it currently operates in-line on RGB only. Chances are it could be made more efficient somehow, but it works. If there aren’t any other elegant solutions out there, I can see about getting the go-ahead to release it and post it on Nukepedia (and maybe spruce it up a bit first). And as fair warning, I can only build for Linux and Windows.
Side note: I was pretty surprised Nuke didn’t have a good built-in solution for this. -Nathan From: Jordan Olson Sent: Wednesday, August 31, 2011 5:06 PM To: Nuke Python discussion Subject: [Nuke-python] quickly average non-zero pixels? hi fellow TDs! I'm working on a gizmo atm- and am trying to figure out the best way for this. I'd like to find the average non-zero value of a channel on the current frame. (working with depth and motion blur) The slowest way I can imagine doing it is to run nuke.sample() on every pixel with an if statement, to eventually average the non-zero (or alpha) pixel values together. Surely there's a better way to do it? Ideally this should happen on every frame transparent to the comper. Cheers, Jordan -------------------------------------------------------------------------------- _______________________________________________ Nuke-python mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python
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