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google / lasr

Code for "LASR: Learning Articulated Shape Reconstruction from a Monocular Video". CVPR 2021.
https://lasr-google.github.io/
Apache License 2.0
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Bone Length #12

Open Jay-IPL opened 3 years ago

Jay-IPL commented 3 years ago

Nice work! I see Jb is the position of the center of the b-th bone (or Gaussian component). But do you need to define the bone length as well?

gengshan-y commented 3 years ago

Hi, there is no bone length in lasr. To apply blend skinning to points, only skinning weights and bone transformations wrt to the root body coordinate are needed.

Instead of modeling local transformations in kinetic tree (which defines bone length), lasr directly optimizes bone transformations w.r.t. the root body coordinate.