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Remove/Rotoscope character/actor/object from moving camera shot
I’m in the pre-production stages of a film I would like to shoot with some friends. A few scenes involve a Disrict 9-ish weapon that explodes/disintegrates the people it hits. I can do this effect fairly easily when the shot is not moving (on a tripod) and I have a clean background slate. However, I would like to do this effect with a moving camera shot. I did some searches and couldn’t find any tutorials, probably because I don’t know exactly what this technique is called. I have a base understanding of how I think one would go about doing this, but it would be great if someone could confirm how it’s done, or just link me to a tutorial.
Thanks,
Ryan Stubbs -
2 Replies
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Dave’s right –
Short of a motion control rig, you’re going to have to do a lot of rotoscoping and tracking, and you still won’t get perfection. Here’s a rundown on what Dave’s talking about:
https://en.wikipedia.org/wiki/Motion_control_photography
It’s basically a camera mount (they’re now making them for DSLRs by the way, so the cost is coming down for small mounts) that allows you to program a move, or series or moves with linear motion, tilts and pans, and such, and then allows the move to be duplicated perfectly. So you can do a pass with a clean background, a pass with flat lighting, a pass with hero lighting, you get the idea…
Joe Bourke
Owner/Creative Director
Bourke Media
http://www.bourkemedia.com -
Wow. I had no idea it was that complicated. As you can probably tell, I’m fairly new to this field. What about is movies like, for instance, District 9 and Transformers 3 (just 2 examples off the top of my head). Those two both involve weapons that disintegrate a character when they are shot. Now that I think of it, the people in Transformers who got shot were probably CGI, while in District 9 they were either using still shots or CGI, right?
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