Difference: MocapEditing (5 vs. 6)

Revision 62006-03-06 - boliang

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META TOPICPARENT	name="CPSC526ComputerAnimation"

-- MichielVanDePanne - 27 Feb 2006

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(Motion signal processing) I usually find it quite interesting to see techniques discovered and developed in one field applied in another, but in this case, I found the results less than satisfying. Watching these animations in action may have been more convincing, but the descriptions and figures did not seem like very impressive results, and on top of this, their methods introduce constraint violations which almost seem to outweigh the benefits. What they believe "to be the most useful" of their techniques, motion displacement mapping, looks like an awkward and unintuitive method way of modifying a motion. I would think that directly modifying a pose of the character, and seeing where that new pose lies on several motion signals may make this method more approachable. -- H. David Young

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The idea is cool, and the results the author presented are also impressive. But it looks how to capture the motion from a 2D cartoon is time consumed and is hard to be handled by an animator without much CG knowledge. The autho made lots of assumations and applied their algorithm only on some simple short motions, such as the motion of the character is one-way, from left to right and so on. If the motion is complex, it is very difficult or impossible to capture the motion from a cartoon. Applying the captured data to the new model is also based on some assumptions and limited. In Figure 10 in the paper, if we want to use a new hat to replace the old one, it leads to a masking problem. In some colorful scene, it is not easy to handle. --Bo

Paper Two

Another paper. Please add your comments below.

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(Turning to the masters: motion capturing cartoons) So much of the technique shown in this paper requires a lot of human involvement that I am curious as to when the motion should be recovered and when it would be more efficient to recreate it. I also found it kind of funny that they mention having data from a cartoon made with a computer tool; if such data was available from the original tool, I would think there would be much more affective ways to re-target the motion. -- H. David Young

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Using the highly developed DSP technology on computer animation is very interesting. I like this idea and the results presented in the paper. Meanwhile, I know that each parameter of the motion can be mapped to a band, but what is the physical meanings for the value? Such as what does 1.73 mean for a band value? --Bo

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