BVH parser

[gemlongman]

Is there a simple way to create a chain with BVH motion files？In fact it will be perfect to add a BVH parser.

[Phylliade]

Hello @gemlongman,

I'm not familiar with BVH motion capture files: do you know how exactly they encode their data? (And would you have an example?)

[gemlongman]

Here is a BVH file in the zip which could be found more in https://sites.google.com/a/cgspeed.com/cgspeed/motion-capture/daz-friendly-release, they can be imported by Motion Builder to see motion. Meanwhile, there is some BVH python parser such as https://pypi.org/project/bvh/, but it will take lots of work to adapt. Running Jump To Standing Idle.zip

[Phylliade]

After some investigations I'm joining you in the fact that's a super good idea!

The BVH file's HIERARCHY section is very close to the definition of a URDF, so this shouldn't be so difficult to rewrite a parser, even from scratch. I've found a good spec here: https://research.cs.wisc.edu/graphics/Courses/cs-838-1999/Jeff/BVH.html

Regarding the features, am I right to suppose we will need actually two features?

• Creating a chain from a BVH HIERARCHY section
• Importing a forward kinematics trajectory from a BVH MOTION section

[gemlongman]

yeah~you are right Besides, for a BVH animation, the movement smooth is same important as some joint being fix at the target position. Maybe it is another big problem...

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