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Submitted by Han Been, posted on October 02, 2000




Image Description, by Han Been



Here is Screen Shot of Jindo3D's Current working Project. It some based Motion trace system with four camera and DSP Board . Character Animation data is extracted Motion Capture System and four camera is detect 5 attached marker on human body. Animation frame are about 3000-4000 Frame.and Single Character is matched each hight(using basic motion retargeting) if u more infomation, check out movie clip

Cheers,
Han Been
jindo3d@dreamexe.co.kr


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Archive Notice: This thread is old and no longer active. It is here for reference purposes. This thread was created on an older version of the flipcode forums, before the site closed in 2005. Please keep that in mind as you view this thread, as many of the topics and opinions may be outdated.
 
Timothy Barnes

October 02, 2000, 01:19 PM

Could you please provide a link to the movie clip?

 
Michael Kurth

October 02, 2000, 01:56 PM

Here is the Jindo3D webiste:

http://jindo3d.dreamexe.co.kr/default.htm

And the movie clip (linked off the main page):

http://jindo3d.dreamexe.co.kr/video/dance.mpg

 
Francis Shanahan

October 02, 2000, 02:59 PM

How are you getting the motion capture data? Is there some way I can use my video camera and get this information without having to purchase expensive equipment? Does anyone know of a way to do this ? Any good sites on this ?

 
fluffy

October 02, 2000, 04:22 PM

Francis: Many years ago, in the good old demoscene, there was a technique for relatively-cheap motion capture, known as "the piss-poor democoder motion capture" method.

Basically, what you do is you put large, brightly-colored dots (each one a different color) on each joint you want to capture the position of, record the motion into an MPEG or whatever, and then filter out the color for each joint in order to approximate its position (by averaging the position on the screen of all the pixels with the color corresponding to the joint). This only works for getting a 2D projection of the data, but if you do this with two or three synchronized cameras, you should be able to get a pretty accurate 3D dataset, as long as each spot is always visible on at least two of the cameras, or if you manually convert the spot on the video into a coordinate on-screen (which was the original old-fashioned motion-capture method - project your video onto a digitizer tablet, select the joint positions, and then advance the film one frame). Of course, you want to do some smoothing afterwards to deal with jitter and the like.

If you want something more expensive but more autonomous, you can always pay lots of money for a Waldoing system from The Creature Shop (don't recall their website URL, but you can search on them with 'creature shop waldo electrostatic flocker' and you'll probably find them soon enough).

 
Steve 'Sly' Williams

October 02, 2000, 07:36 PM

How about the motion capture method used in the original Prince Of Persia? Maybe the question should be who can remember the original Prince Of Persia? :)

The programmer (cannot remember his name) videotaped his brother running and jumping in a local park, played back the video, paused at appropriate frames and traced the image onto a piece of paper placed over the television screen.

Now THAT'S technology! *grin*

Steve 'Sly' Williams
Tools Developer
http://www.kromestudios.com

 
Francis Shanahan

October 02, 2000, 07:44 PM

Now THAT sounds like a technique I can afford. Thanks for the help and to the original image poster, nice job, looks great :-)

fs

 
Jeroen

October 02, 2000, 08:44 PM

It also sounds more like "the piss-poor democoder motion capture" Fluffy mentioned. I don't really see the piss-poor part in having three synchronized cameras taping a sequence that can then be digitized to an mpeg :).

The movie looks very cool by the way.


Jeroen

 
Victor Ho

October 02, 2000, 08:53 PM

The programmer (cannot remember his name) videotaped his brother running and jumping in a local park.

Guy's name was Jordan Mechner I believe.

 
Khrob

October 02, 2000, 09:27 PM

I'll second the Jordan Mechner call...

Ahhh... primary school... those were the days!

 
thec

October 03, 2000, 02:16 AM

Now, that's what I call a cool video. I'm not thinking about the demo, however it was very nice too :) I'm thinking of the mpeg itself, a videocamera shooting the monitor from a 10-20 degrees angle.

Makes me remember the "good old days" when I played with my mothers cam :)

Cool video, can't wait for the executable.

Cheers.
Albert Sandberg

 
DirtyPunk

October 03, 2000, 12:31 PM

Just for fun - You can do it with a static camera. But it takes work :)

Little wire skeletons can be moved realistically to make a nice animation (I've done claymation/wire model animation before). Maybe this will over take motion capture :)

 
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