A method of deriving data of a user's body pose in an enhanced reality system includes, with at least one camera coupled to a body-mounted housing, capturing at least one image in three-dimensional (3D) space of at least one extremity of a body of a user on which the body-mounted housing is mounted, and with a processor executing a body pose module, deriving data of a user's body pose based on the at least one image captured by the camera.