How do special effects experts reproduce hidden objects that are covered up by green screen suits?

How do special effects experts reproduce hidden objects that are covered up by green screen suits? - Woman in White Dress Lying on Bed

I was watching the SFX clips from Hollow Man (2000) and I noticed that in the scene where the invisible soldier washes his hands the faucet handle turns. In the green suit scene, the actor comes to the sink and turns the handle. In the movie we see the whole handle turn.

Now, if you think about it, the actor's hand is covering up the handle, so how can it be visible in the frame?



Best Answer

There are several different ways a lot of these scenes could be done. Here are at least three that I know of:

Clean Plate

Everything is set up and the camera gets a clean picture of everything. Then when the actor goes in with their green screen they can be painted out or rotoscoped out. IE, they layer the live shot over a static shot and cut out the green screen to reveal the layer below.

3D Recreation

In a shot where an actor might interact with something, they might have a prop that the actor interacts with, and then in post they create a CGI object and put it in it's place.

Strings/Motors/Other Practical Effects

Another way that certain shots could be completed would be to have it done practically. IE, a string is attached to the faucet and it's pulled and the string is rotoscoped out. Or they could have it attached to a motor that they control off-screen.


The takeaway is that there are probably countless different ways these sorts of scenes could be shot, but I've done my best to highlight what I think are the most likely.




Pictures about "How do special effects experts reproduce hidden objects that are covered up by green screen suits?"

How do special effects experts reproduce hidden objects that are covered up by green screen suits? - Vintage TV set on wooden bench
How do special effects experts reproduce hidden objects that are covered up by green screen suits? - Retro TV set on bench in park
How do special effects experts reproduce hidden objects that are covered up by green screen suits? - Silver Imac on White Table



Why is green used for special effects?

Green is used because it is far from skin color in the color spectrum. When the software intends to remove the green it will assign transparency to a certain range of color, if the actors are wearing colors that are too close to the greenscreen color, their clothes will disappear. At times blue is also used.

Why is green screen used in film production?

Why Is Green Screen Used in Film Production? A green screen allows film production to remain within a sound stage but depict disparate locations and sequences. There are many, many uses for this technique in Hollywood filmmaking, many of them to do with special effects.

How are freeze frame commercials made?

The actor is wearing a wire suspended from the ceiling so that he can fall only part-way or appear to float in mid-air. Once the scene is shot, software similar to morphing software interpolates between the images to allow the slow-motion feel. The filmmaker can therefore slow down or speed up the action at will.



101 Green Screen Tips In 15 Minutes !




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