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Idea #23: Applying Optical Flow to Speed Effect in Sequencer

Written by jamesr the 17 Aug 10 at 19:16. Category: Sequencer. Related project: Nothing/Others. Status: New
Rationale
"The Matrix bullet time sequence was solved with optical flow to smooth and retime the shot, and as such elevated Optical Flow much higher in the minds of the VFX community."
--http://www.fxguide.com/article333.html
And our Speed Effect is used for retime a sequence. The current "blend frames" solution is not enough to meet some higher requirement such as the cool bullet time effect in The Matrix.

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Solution #1: Use an algorithm of optical flow
Written by jamesr the 17 Aug 10 at 19:16.
Use an algorithm of optical flow to calculate the MISSING FRAMES need by speed effect which smooth the whole sequence.
There are many research about algorithms of optical flow calculation. We probably need to choose a fast one for preview and an accurate one for final render.

Propose your solution


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Comments
vildanovak wrote on the 18 Aug 10 at 04:36
Libmv is a google project specifically developed to solve various tracking issues in blender. It has allready a solid code basis and it could be probably used both for this as for camera and motion tracking in the future.

ibkanat wrote on the 18 Aug 10 at 08:46
http://users.utu.fi/jhkarh/code.html Jahka made a patch for the old blender that worked decent.. This should be looked into


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