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Replacing an object in live action footage with 3D model
Hello everybody.
One of our clients has asked us to replace all their logos in one of their old spots with their new logo. This hasn’t been a problem when the logo is static, but the problem is that on this particular ad, the logo appears on glasses where that several kids are drinking from! Eek! This means that the camera is moving (slightly), and that the glasses pitch, bank and roll.
We’ve had some success doing this frame by frame by simply setting the footage as background, and creating a cylinder to mimic the glass’ movement. We then put the logo on our 3D cylinder, composite the shot in After Effects, and presto.
The problem is that when the glass movement is to wild, we’re having a very tough time matching the movement in 3D. When we composite, the virtual logo jumps, and doesn’t seem to stick to the glass.
So MY QUESTION is… is there any better way of doing this than what we’re trying now? If someone has gone through this process and has an easier way of accomplishing this, be it some software or simply a tutorial or methodology that could make our lives easier, it would be a GREAT help.
Thanks in advance,
RE
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4 Replies
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Sadly I have seen next to nothing that really if going to help you here. In strong tracking applications ie. PF track you can clamp the camera … so you track the object rather than the camera but thats a few grand….and not perfect either.
/randy
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What about mocaha ae?
love
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Thanks for all the help guys.
I’ve taken a look at both PF Tracker and Monet, which is a bit better suited than Mocha AE for what we’re doing. The problem with Monet is that it’s basically a 2D app, and when somebody picks up a glass and drinks from it, the distortion is too great. Aslo, I’ve found that Monet is a “planar tracking” program, and the logos we’re replacing are on cylindrical glasses. We need a 3D solution.
I’ve also had a look at PFTracker, but the documentation wasn’t much help, and they have amazing total of 1 video illustrating how their program works on their site. Spending 3000 pounds on something that MIGHT work isn’t going to fly (we’d gladly drop the cash if we knew it would solve all our woes).
I’ll let you know if I find something other than hard work, and tracking by hand.
Thanks again,
RE
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Hey,
Have you considered Syntheyes? I think you can do object tracking in that and its only 400 bucks odd. Its pretty cool. They do a demo version I believe.
Cheers, sCam
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