System and method for measuring the movements of articulated rigid bodies

A method for determining spatial information for determining spatial information for a multi-segment articulated rigid body system having at least an anchored segment and a non-anchored segment connected to the anchored segment, each segment in the multi-segment articulated rigid body system representing a respective body part of a user, the method comprising:

• obtaining signals recorded by a first autonomous movement sensor when the first autonomous movement sensor is coupled to a body part of the user represented by the non-anchored segment;
• providing the obtained signals as input to a trained statistical model and obtaining corresponding output of the trained statistical model;
• and
• determining, based on the corresponding output of the trained statistical model, spatial information for at least the non-anchored segment of the multi-segment articulated rigid body system.

A computerized system for training a statistical model for generating spatial information for a multi-segment articulated rigid body system having at least an anchored segment and a non-anchored segment connected to the anchored segment, each segment in the multi-segment articulated rigid body system representing a respective body part of a user, the computerized system comprising:

• a plurality of autonomous movement sensors;
• at least one computer hardware processor;
• and
• at least one non-transitory computer-readable storage medium storing processor-executable instructions that, when executed by the at least one computer hardware processor, causes the at least one computer hardware processor to perform:
• obtaining movement signals recorded by the plurality of autonomous movement sensors when each of the plurality of movement sensors is coupled to a body part of a first user represented by a respective segment in the multi-segment articulated rigid body system;
• generating training data using the obtained movement signals;
• training the statistical model using at least some of the generated training data to output a trained statistical model, wherein the trained statistical model is configured to generate spatial information for a multi-segment articulated rigid body system using movement signals obtained by a single movement sensor coupled to a body part of a second user;
• and
• storing the trained statistical model.