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View Full Version : Composite or not to composite in lightwave



sugna
01-05-2005, 09:35 AM
What would be the best way to achieve this.

I have a 5 sec of video the video is of a hand opening and revealing a rock with a logo on it. I need to replace the logo with my own. The hand moves slightly and the hand opens putting shadows on the rock. I tried masking this in Photoshop frame by frame however the effect isn't as good as I want because the logo is drifting some what.

What would the best way to do this in Lightwave?

I have modeled the rock with the logo on it but how would I mask out the fingers so when they are closed it hides the rock object and puts shadows on it as the fingers open

Shane

lunarcamel
01-05-2005, 10:02 AM
Post a picture of what you are trying to do.

You need to use compositing software - like After Effects or DFX.

From what you describe Id do the following:

1. Render out a still of the logo if done in 3D or use a logo done in PS
2. Rotoscope the hand so you have a mask
3. 2D track the old logo and replace it with the rendered still (use the rotoscoped hand to either replace the hand on top of the logo or mask out the hand from the logo - doesn't matter)
4. Try to pull a mask of the hand shadow so you can reapply it to new logo

Its rather simple and theres no need to even open LW.


:rolleyes:

Safe Harbor
01-05-2005, 02:07 PM
Pat Beck has a tutorial on doing this.

http://www.sharbor.com/products/ECSN3010003.html