Matching 3D layer to organic shot movement

Adobe After Effects

Matching 3D layer to organic shot movement

Posted by Ed Gilbert on August 1, 2007 at 12:35 am

I’m somewhat new to AE… not a pro for sure.

I have a shot of an actor at a table. I’ve added a computer screen layer that I turned into a 3D element and oriented to make it look like a holographic screen floating in the air in front of him… also cranked down the opacity of that layer.
The layer with the actor was shot using a hand held camera… so there is slight movement. The effect of the hologram gets blown slightly when the rest of the shot is moving slightly but the holo-screen is motionless.

The question… What would be the best approach to linking the the hologram layer to the movement of the camera in the layer with the actor so it really looks like it’s part of the space the actor inhabits?

Any ideas or suggestions are appreciated!
Jeff

Ed Gilbert replied 19 years, 1 month ago 2 Members · 2 Replies
2 Replies

Mike Clasby
August 1, 2007 at 1:07 am

AE Tracking Tuts

The first one might work for you. It’s for replacing a monitor, but you can offset your hologram from any tracking points.

Using the new Motion Tracker
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=487&xml=aft6ttmotiontracker

Andrew Kramer (AE Cow Moderator) does some AE Tracking in these tuts:

42. Advanced Sky Replacement July 16, 2007

43. Demon Face Warp July 23, 2007

Here:
https://www.videocopilot.net/tutorials.html

AE is a 2D Tracker, if there’s a lot of 3D camera movement you need a matchmove see SynthEyes. Here’s a Cow tut and the SynthEyes site:

https://forums.creativecow.net/cgi-bin/new_page_wrapper.cgi?forumid=14&page=https://www.creativecow.net/articles/holt_karl/syntheyes/index.html

https://www.ssontech.com/

Here’s the rest of the AE Tracker Tuts I know of. For a step by step on adjusting a track that goes bad (Tracks gone bad! the movie) see the 3rd part of Aharon’s series on turning video into cartoons, there he tracks an eye onto the character, starts at the 5 minute mark. It’s only a 1 point track but he shows you how to adjust frame by frame when the tracker gets cranky. Hope these help.

Track It
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=100362&xml=ae65tttrack

Keep motion in perspective
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=100241&xml=aft65cornerpin

Tracking obscured objects in video
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=399&xml=aft6tracking

Aharon’s tut:
https://forums.creativecow.net/cgi-bin/new_page_wrapper.cgi?forumid=2&page=https://www.creativecow.net/articles/rabinowitz_aharon/cartoon_look/index.html

movie here:
https://forums.creativecow.net/articles/rabinowitz_aharon/cartoon_look/CC_LiveTrace_Pt_3CD.mov

Here
Ed Gilbert
August 1, 2007 at 1:22 am

Thanks… that should keep me busy! I knew there is a way to do this… I just didn’t know what it was called in AE.

Thanks!

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