"Chris B" <nom### [at] nomailcom> wrote:

Thanks Chris.

Could you pls tell me what BVH files are?

Yes, "economics", the way I used in passsing was very ill-defined.  As a
differently-abled adult, ex-engineer,  who is trying very hard to teach herself
character animation.  Who feels the progress had been painstaking
slow.

You are right, even digital image capture & processing would require investment
in hardware and software.  The information I discovered on various ways to
accomplish this the state of technology was simply mind boggling.  Then I found
myself researching 6D rotation sensors.

Thanks anyway...


> "melo" <mel### [at] coxnet> wrote in message
> news:web.47b53aaa96bac4aa92254edf0@news.povray.org...
> > Has anyone figured out an economic way to handle motion capture to use for
> > skeletal animation joint rotation vector specifications in different
> > poses?
> >
> > I presume, digital image processing with multiple digital cameras with
> > optical
> > markers might still be the least expensive option?
> >
> > So far, I have used pose pictures in Character animation books, drew some
> > pictures for myself, and from those picture eyeballed the joint rotation
> > vectors.
> >
> > Given I have 23 joint rotation vectors, 10-15 of which get involved in
> > most
> > gross poses I played with. The going had been extremely slow.
> >
> > Thanks,
> > Meltem
>
> This is a tricky question because the economics depend on what you have
> access to and how much you're likely to get value out of it. If you're doing
> movies, then it's economic to splash out on the most professional kit about.
> If you're at college, you may be able to find someone close with some form
> of solution that you could team up with.
>
> I don't think there's a free way of doing it. Even image processing of
> optical markers needs some software and I don't recall seeing any freeware
> that does that sort of thing, though I haven't done a Google on that sort of
> thing recently.
>
> Most data capture techniques require that the data be cleaned up after data
> capture. For example, a certain proportion of optical markers are likely to
> be out of sight in each frame. So far as I know, even some of the more
> sophisticated hardware can generate spikes that register an unrealistic
> joint position from time to time, so you still need hours of work to create
> a smooth sequence.
>
> If you're talking about economies in terms of time, then I think you'd have
> to be doing an awful lot of this to pay back the time it would take to
> evaluate solutions, buy and learn how to use one, then work out how to get
> the output into a format that you can use with POV-Ray.
>
> On the other hand there are free BVH files out there that other people have
> captured which contain thousands of poses (which cuts the problem in half).
> There are also free tools for visualising pose data and potentially for
> modifying it using wireframe characters that could cut the time to hand-pose
> a model. You still have the problem of converting it into the format you
> wish to use though.
>
> Regards,
> Chris B.

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