From the course: Compositing a Sci-Fi Force Field in NUKE

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Creating the body flash mask

Creating the body flash mask - Nuke Tutorial

From the course: Compositing a Sci-Fi Force Field in NUKE

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Creating the body flash mask

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- With this much light, flashing around the room, you'd expect interactive lighting, on both the character and the room environment. So, let's start by creating a "flash mask" for the character. Then, in the next movie, we'll make the mask for the room. The movie after that, we'll do the flashing. So, let's stop this, and maybe set this over here on frame 85 or so, take a look at how we might pull off a flash mask for our character, using his own alpha channel. Let's start by coming up here, where the character lives. This is where the character has been keyed. And we have a nice alpha channel here. So, let's get ourselves a "dot." And, set it over here, and hook up to there, because we need to route that alpha channel over to this area, where I've got some room to play. OK, so, this dot has my alpha channel, and, of course, my RGB, too, but all I'm going to be working with is the alpha channel. So, to create the body flash mask, what I want to do is have a gradient across his body…

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