View Full Version : Homebuilt motion capture system site

01-27-2006, 10:13 AM
Hi folks:

I couldn't figure out how to change a previous post title, or copy it as a link, so here's the relevant info:

Hi Larry:

Thanks for the info. In that case, LW users might be interested in this (unless they already have their own mocap system :

We've started a new yahoo group at: http://movies.groups.yahoo.com/group/motioncapture/ .

It's for people who are interested in building their own motion capture systems using cheaper off-the-shelf technology. We'll have an emphasis on free use software and open source software.


Michael Miles

01-27-2006, 12:02 PM
seems interesting but Yahoo want's way too much info to sign on.
would have been a nice read tho

01-27-2006, 12:15 PM
I'll second that. I got a butt-load of spam the last time I signed up for a yahoo group.

01-28-2006, 04:59 PM
i'd love to read about it but NOT on a yahoo spam filled group...

can you post some of the info either here or on a non spam website?

01-28-2006, 05:12 PM
heh...spam from yahoo. I sign to such groups using my yahoo email address, which isn't exactly rigorously checked :)

01-29-2006, 01:40 AM
i have not received much spam from others or yahoo in my yahoo account, I also have it set to not generate emails. and instead read it like an online forum. (hehe which is probably why I have not received spam)

Thanks for the info, will join.

01-30-2006, 08:09 AM
Hi folks:

Sorry you got spaminated by yahoo. I personally haven't had that problem, but I always select not to receive emails when I join a yahoo group. The only thing I notice is they have adverts for related categories, but I'm usually interested in looking at new mocap stuff, so no problemo.

However, if you aren't a Mony Python fan of spam, here's the welcome message from the site:

Hi folks:

Welcome to our group! I'm starting this group to facilitate sharing
among people who want to design, develop, and use their own motion
capture (mocap) systems. I've been developing my own system, and I
would like to share ideas with others who are interested in pursuing
the same goal. My own interest is in using motion capture for 3D
computer animation.

Be sure to check the links section for links to technology and
techniques used for motion capture. NaturalPoint has a new
technology called OptiTrack that is very affordable. If you have
access to Matlab, there are also some very good sources on the web.

The quality of 3D computer graphics programs is better now than ever
before, and within the reach of the moderate budgets of independent
filmmakers. In addition, media forms are expanding now, so motion
capture can be used for other forms of media in addition to film or
video. Computer games have created the machinima form which is very
compatible with motion capture. I'd also like to encourage other
non-mainstream applications of motion capture that aren't supported
by the big (expensive) motion capture hardware manufacturers.

So, to get the ball rolling, here's an overview of the system I'm

1) An optical mocap system using DV camcorders
2) Processes the DV footage to extract marker positions
3) Extracts the 3D position information from those markers
4) Inputs that data into 3D Studio Max Character Studio
5) to animate 3D human characters

Like most movie projects, you'll require a team to produce a mocap
system. Here's my recommended minimum suggested mocap team:

1) Computer programmer
2) Mathematician

In addition, you may require:

3) Electronics or computer engineer
4) Camera expert (for optical mocap)

I happen to be a computer programmer and mathematician along with
being very experienced with the technical aspects of using and
extracting footage from my DV video cameras. I am not an
electronics guy, however, so I work with an electronics engineer for
special gizmos.

At this time, I will not be providing motion capture equipment or
complete software systems to others. The main reason is that most
of my software incorporates other free use/open source software
which I do not own. However, it was possible for me to create a
system fairly easily, so I believe others can too.

I am very willing to share my experience with others, but I am
trying to complete my own movie projects, so I won't have time to
solve problems for others. However, I believe we can create a
community of knowledge amongst ourselves which will benefit all of

Again, welcome,

Michael Miles