You could generate an alpha based on value!=0.

Then blur very heavily, and unpremult.


Hugh

On 01/09/11 01:06, Jordan Olson wrote:
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


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