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Green screen special effects are amazing to me

submitted by SFOGuy

6 years 3 months 1 week ago

I had assumed that to get effects like this took millions and lots of time/money--and didn't work in real time.

Clearly, I was misinformed. I think what I am looking at is a computer created model ("Maya" and Autodesk software in the lead, I think) running in a computer in real-time, being composited to a life actor moving in a set.

From Gizmodo:

"This is a great PreViz tool, so that we can record in REALTIME, the FG, the BG, the Matte, and the Camera Track data (in FBX format, with zoom a focus) so that we can finish in NUKE the final composition with the OTOY same ORBX file we used for PreViz in UE4. Credit ‎Oscar Olarte Ruiz. Pre Vis, After Effects, Maya, Autodesk."

4 Comments

impressive, but not surprising that it can be done in realtime.

basically the same tech that is used for AR/VR, just has to sense+record the movement of the camera precisely.

I guess I should have been able to draw that conclusion, eh?
But---I hadn't drawn the direct line between the two techs.
Or maybe, it's more one tech?

impressive, but not surprising that it can be done in realtime.

basically the same tech that is used for AR/VR, just has to sense+record the movement of the camera precisely.

This is basically how James Cameron shot Avatar. The backgrounds weren't fully rendered, but had enough detail he could get a feel for the final result. Also the actors would be represented in realtime in his field of view as their 12 foot tall counterparts...pretty amazing.

Yeah, the important thing here is the actor is not interacting with any of the scene. Sure, he sits on a couch, but if you were to look closely, you'd probably see the couch wasn't deforming normally.

Basically, this is just a static scene with a few simple shadows, and computers are very good at that these days.

Walking through a forest and brushing leaves out of the way? That's another story.

impressive, but not surprising that it can be done in realtime.

basically the same tech that is used for AR/VR, just has to sense+record the movement of the camera precisely.

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