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| How ipiMocap studio creates a bvh file? https://forum.ipisoft.com/viewtopic.php?f=2&t=10070 |
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| Author: | NicoDownBeat [ Tue Jan 08, 2019 4:07 am ] |
| Post subject: | How ipiMocap studio creates a bvh file? |
How ipiMocap studio creates a bvh file? I'll explain: If you consider a "one-frame animation" with the Tpose in which only the hip is rotated for example: Rx 30, Ry60, Rz 45 (degrees) and you'll export into bvh file, you'll obtain this rotation (approximately) Rx:-9.5 , Ry:-0.000002, Rz:20.6 (degrees) (You can find those angles if you open the bvh file with a simply text editor). What angles are those? Are Euler angles? or Axis angles? |
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| Author: | margarettteS [ Wed Jan 09, 2019 11:06 pm ] |
| Post subject: | Re: How ipiMocap studio creates a bvh file? |
What are you trying to convey here? I am a bit lost with your thoughts. |
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| Author: | NicoDownBeat [ Thu Jan 10, 2019 2:56 am ] |
| Post subject: | Re: How ipiMocap studio creates a bvh file? |
LOL! Exactly what I wrote. In ipi Mocap Studio ,consider a simply Tpose. Now select only the Hip and rotate it by a x, y, z angles. You can read these angles on the right of your screen into the poseTab. Write them down. Now export only that frame from ipi Mocap Studio into a bvh file. Open that bvh file with notepad. Scroll down, under the "motion" part. You'll find the the x y z translation of the hip and then the x y z rotations of all the bones. Obviously all rotations are 0.00000 except the hip's rotations. Those rotations' value are different from rotations value above. Why? Thank you |
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| Author: | vmaslov [ Thu Jan 10, 2019 5:44 am ] |
| Post subject: | Re: How ipiMocap studio creates a bvh file? |
Historically, different order of Euler angles is used for display on the Pose tab (XYZ) and for export to BVH (ZYX). Hence the difference in values. Our Biomech add-on is better suited for data analysis and allows to export Euler angles with various orders. |
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