How To Use The 3D Keyer

The 3D Keyer makes a map of the distance from the input color from the selected color. Now as an example, you’ve selected the color green; the Keyer creates a map of the distance from green to each pixel color value. It looks at the color value and matches the distance to how far it is from the color green or whatever color you pick. Where the color values are similar, the map is darker or black and where the color values different like skin tone the map is lighter or white.

That map is then scaled with the controls inside the 3D Keyer to control the density of the map to be used as a mat. I'm going to show you how we can use this as a mat. It's really, really great guys. I'm going to be using be this in conjunction with a couple other Keyers from the fix EVO bundle.

The first thing I'm going to do is, apply a fix UV blur. This is just going to help blur out my edges a little bit. it just polishes up the look of the key. The first thing I want to do is, add the Keyer 3D from the EVO bundle. Now I have my Keyer 3D up handed from the UV blur it works just like a regular Keyer. I'm going to go and pick my color swatch and pick the color and you can see it gives me a pretty good key. I'm going to go to my alpha channel and I'm going to work on my mat.

Let's go into our controls and use our mat high, mat low and our mat gamma to try to adjust the density of this mat. It does a really good job. I’ll go ahead and fiddle with the controls a bit. And as you can see, I think it's an excellent Keyer. You probably can’t tell a whole lot about it over YouTube. As you can see this is a depth of field. The guy in front here is blurred out and he’s in focus because he’s closer to the camera so this is kind of a 3D Keyer we’re having to pull here. As you can see It gives us a pretty key except for a little bit of blue spill. We’ll take care of that in a minute.

Now, we have this Keyer 3D and we have this mat. We already used our 3D Keyer to create this awesome mat so, what I'm going to do is go to my color tab and reorder it. When I reorder the channels to my alpha channels AAAA and that’s going to make it. Even in my color channel, I’ll have my mat.

I'm going to add a dilating road to help take care of my edges; I’ll make it -1 when I do that, it sucks in the edges of the mat. I'm going to invert that mat, go to my color and invert it. From my UV blur, I'm going to branch off another key, maybe a key lot. Now that we have this key lot, I'm going to use the mat that I got from my Keyer 3D as the garbage mat input to my key lot. Now we have a pretty good key and if I want to I can lay this over my background just to get a rough camp. We have this camp and if you want it to you could even go in and add a bats node and there’s all kinds of stuff you can do but basically what I'm doing here is showing you how a great job the 3D Keyer does.

We made a mat with our 3D Keyer, reordered it, made this mat and used it in conjunction with our key lot node. You can see we got a fairly, fairly descent actually better than fairly descent but a really good key. I'm going to go to my key lot node and just adjust the screen range up a little bit to fill in his jacket there. As you can see, we have a really good key. Imagine if I would just 1 key, there’s no way I would’ve got such good results because I can disconnect the 3D Keyer and you can look at the Key that we have, it's just not that good. I could go and tweak it and we get fairly descent results but if I use the 3D Keyer from fix like this, you can see that it made a wonderful mat and a wonderful key.

Now let's go back in another way, just copy and paste our picture, which has our UV blur and everything we’re back to square one. We’re going to back to this a little bit more complicated. This is a different way to do your Key and there are several ways to do this. I'm just highlighting two.

First thing we’re going to do is branch off the key lot from the UV blur and I’m also going to branch off a Keyer 3D from the fix bundle. We have the Keyer 3D and key lot branched off. I'm going to my key lot and slip it to try to get a descent key as you can see there’s a horrible spill. I'm going to go to my Keyer 3D and do the same thing.

Let's go into our Alpha channel and do the same thing again. Let's try to work on our mat, go to the Key lot and do the same thing. It looks like we got a pretty good one I there. I'm going to reorder this like I did the last time. Go to color, reorder to our alpha channel and I can just copy and paste this reorder node and use it to our Keyer 3D. Okay now I‘ve got a reorder node of both of them and I have two mats. What we’re going to do is, we’re going to max this mess together but first I'm going to add a dilating road to this reorder coming off my Keyer 3D. We’ll have it to be -1 and we’re going to branch another dilated road and make it +1. Now for my key lot reorder, I will up in the max from my layer venue. I want to pop-in my first dilating road and then from my max node I'm going to add a min and put in my +1 dilating road.

All I have to do is add a switch mat to m y original image. Let's open the switch mat, remember that input to the switch will reverse so let's switch our inputs and now we a key. All we need to do is go in and maybe add some squeal suppress. You can adjust some of this out and I’m going to fiddle it, I'm not fiddling it too much. You can lay it over a background. It looks like we have a pretty descent key in this area too; let's take out some of this spill over in here.

There are two methods of using the wonderful Keyer 3D from the fix EVO bundle.