Systems and methods for automated rigging and generating animations based on real musculoskeletal movements

A three-dimensional (3D) animation system comprising:

• one or more hardware processors configured to:
• receive a plurality of scans of a target subject;
• generate a first plurality of primitives that form a 3D model of the target subject based on a first scan of the plurality of scans;
• define a musculoskeletal framework comprising a second plurality of primitives that represent virtual muscles and virtual bones detected from other scans of the plurality of scans;
• rig the 3D model for animation based on an alignment of the second plurality of primitives of the musculoskeletal framework and the first plurality of primitives of the 3D model;
• and
• animate the 3D model based on simulated contractions of one or more of the virtual muscles, wherein animating the 3D model comprises:
• determining an association between primitives from the second plurality of primitives representing the one or more virtual muscles and aligned primitives of the first plurality of primitives;
• and
• adjusting the aligned primitives according to a movement created from the simulated contractions of the one or more virtual muscles.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a three-dimensional (3D) animation system, cause the 3D animation system to perform operations comprising:

• receiving a plurality of scans of a target subject;
• generating a first plurality of primitives that form a 3D model of the target subject based on a first scan of the plurality of scans;
• defining a musculoskeletal framework comprising a second plurality of primitives that represent virtual muscles and virtual bones detected from other scans of the plurality of scans;
• rigging the 3D model for animation based on an alignment of the second plurality of primitives of the musculoskeletal framework and the first plurality of primitives of the 3D model;
• and
• animating the 3D model based on simulated contractions of one or more of the virtual muscles, wherein animating the 3D model comprises:
• determining an association between primitives from the second plurality of primitives representing the one or more virtual muscles and aligned primitives of the first plurality of primitives;
• and
• adjusting the aligned primitives according to a movement created from the simulated contractions of the one or more virtual muscles.