Search found 149 matches

by leith
Wed Jan 26, 2011 8:06 pm
Forum: ARENA & Expression
Topic: proper lighting of mocap area?
Replies: 5
Views: 3701

Re: proper lighting of mocap area?

stay away from halogen. lots of IR generated by them.
by leith
Thu Dec 30, 2010 9:55 pm
Forum: Camera SDK
Topic: Units of SetExposure method
Replies: 8
Views: 7098

Re: Units of SetExposure method

Also, keep in mind: There are specific types of lighting that are designed to work with high frequency shutters. They are typically used in film making.

Specifically: HMI lights and Kino Flo lights. Kino Flo in particular is primarily designed to deal with shutter issues.
by leith
Fri Dec 17, 2010 10:07 pm
Forum: Camera SDK
Topic: Camera sdk tracking wrong, why?
Replies: 8
Views: 6368

Re: Camera sdk tracking wrong, why?

Full transformation matrix is required, not just rotation matrix.
by leith
Fri Dec 17, 2010 9:58 pm
Forum: ARENA & Expression
Topic: takes recall which objects are active
Replies: 1
Views: 2101

takes recall which objects are active

<t>currently, an individual take (pt2 file) forgets what objects (rigids and skeletons) were active and tracking when the file was created. This makes it tedious to do batch processing as rigids and skeletons don't turn themselves on and off as you move from take to take. If we could save the knowle...
by leith
Mon Dec 13, 2010 1:33 am
Forum: General OptiTrack Support
Topic: V100 optical center
Replies: 2
Views: 2313

Re: V100 optical center

sigh... nevermind. Was a bug in my solver. now fixed.

Discovered it when my synthetic wanding system (it pretends to be a mocap system and creates wand data as if it were coming from a system) started solving the same offset.
by leith
Sun Dec 12, 2010 2:50 pm
Forum: ARENA & Expression
Topic: About three-marker wand
Replies: 6
Views: 4555

Re: About three-marker wand

That would be a reasonable assumption... but me thinks I've said too much already...
by leith
Fri Dec 10, 2010 9:09 pm
Forum: General OptiTrack Support
Topic: Intrinsics camera parameters
Replies: 8
Views: 5472

Re: Intrinsics camera parameters

<t>btw... also:<br/> <br/> The 3 marker wand calib uses the same premise as a checkerboard calibration. the difference is that checkboard calibrations have uniformly spaced verticies that create non-overlapping line segments. The wand technique provides much much more line segments than the checkerb...
by leith
Fri Dec 10, 2010 8:58 pm
Forum: General OptiTrack Support
Topic: Intrinsics camera parameters
Replies: 8
Views: 5472

Re: Intrinsics camera parameters

<t>Doug, can you go the other way around? Say... calibrate intrinsics first thing of the day. save that calibration. Then, adjust camera placement... load up the saved calib with the already solved intrinsics and then run a calibration of extrinsics? Cameras get bumped.... run another extrinsic solv...
by leith
Wed Dec 08, 2010 11:13 pm
Forum: Camera SDK
Topic: .net wrappers for c++ SDK
Replies: 46
Views: 124702

Re: .net wrappers for c++ SDK

hehe. yea. I'm prone to that kind of thing :) Do keep checking for issues.
by leith
Wed Dec 08, 2010 6:05 pm
Forum: ARENA & Expression
Topic: Blue-sky question - ever possible to get 30' capture?
Replies: 18
Views: 16527

Re: Blue-sky question - ever possible to get 30' capture?

<t>That seams feasible. Though its probably not possible in Arena. No SDK.<br/> <br/> Hybrid mocap systems are always interesting but I keep coming back to optical for real production work. I don't like the idea of putting expensive hardware on the actor, who most certainly needs to roll around on t...