Deriving Input from Six Degrees of Freedom Interfaces

摘要

The present invention relates to interfaces and methods for producing input for software applications based on the absolute pose of an item manipulated or worn by a user in a three-dimensional environment. Absolute pose in the sense of the present invention means both the position and the orientation of the item as described in a stable frame defined in that three-dimensional environment. The invention describes how to recover the absolute pose with optical hardware and methods, and how to map at least one of the recovered absolute pose parameters to the three translational and three rotational degrees of freedom available to the item to generate useful input. The applications that can most benefit from the interfaces and methods of the invention involve 3D virtual spaces including augmented reality and mixed reality environments.

主权项

1. An interface for producing an input from an absolute pose of a first item associated with a user in a three-dimensional environment, said interface comprising:
(a) a unit on-board said first item, said unit configured to receive non-collinear optical inputs presented by at least one stationary object in said three-dimensional environment, said at least one stationary object having at least one feature detectable via an electromagnetic radiation, said at least one feature presenting said non-collinear optical inputs for establishing a stable frame in said three-dimensional environment; (b) processing electronics for recovering a homography, said homography mapping said non-collinear optical inputs to a reference frame, said processing electronics further generating a signal related to a first element selected from the group consisting of said homography and a transformation of said homography; (c) an application employing said signal in said input; wherein said absolute pose comprises at least three translational degrees of freedom and at least three rotational degrees of freedom.