From the course: VFX Keying: Master Course
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Easy ways to synthesize shadows - Nuke Tutorial
From the course: VFX Keying: Master Course
Easy ways to synthesize shadows
- [Instructor] Sometimes a green screen plate has no usable shadow, so you will have to make one. Before you get out your roto tools, you might try this gag, where we create a shadow from the key character's alpha channel. Let's talk about creating shadows, and what we have to look out for. When you're making shadows, you have to match the density of the shadow. Now, you can get that by looking around to see if there are other shadows that you can match the density. And of course, color. Shadows are not necessarily gray. They might have a bluish, or a reddish cast to them, so again, you can pick up hints from other shadows in the scene. The direction. Sometimes there is obvious light sources that you would use as a key, or you might be able to match the direction from something else in the scene. In this particular case, we had neither, so what I did was, I looked at the fact that this part of the floor was hotter than over here, so that meant that the light source was somewhere up…
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