cg integration with randomize

Mar 23

cg integration with randomize

Posted in: The Pad

I was reading the hellboy q&a thread, and found this bit on integrating cg by using the randomize node.
Pnagle explained the way he did it, but he was referring to a jpg of a node tree that is no longer online.

Quote:

each randomize’s seed has an a simple expression in it for the first one its just time, for the second its time + 1, for the 3rd its time + 2 i do this so that the seeds and the random numbers are a bit different..granted you can change the expression to anything you want….
i also set the amplitude to 1 for all 3 randomizes
then the copy’s are for simply copying the background channel to the foreground channel.
the first one copies r, the 2nd copies g…then you max it back into a defocus or a blur to soften up the edges and help it blend into the background, but still to get the random dirty edges…then put it together with the grain it works out pretty well..

I kind of get what he’s saying, but it would really help if someone has a bit more info.
Especially a little sample script in shake or nuke would be AWESOME 🙂

Any other cg integration techniques are welcome as well of course
(other than lightwrapping and edgeblurring)

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Hasta La Motion!